OBD2-OBDII Engine Light Trouble Codes Definitions, Description and Repair Information

P1706 2004 Nissan Altima Sedan - Park and Neutral Position Switch

P1706 2004 Nissan Altima Sedan - Park and Neutral Position Switch

Possible causes - Misadjusted Park/Neutral Switch - Faulty Park/Neutral Switch - Park/Neutral Switch harness is open or shorted - Park/Neutral Switch circuit poor electrical connection Tech notes For…

P1760 2004 Nissan Altima Sedan - Overrun Clutch Solenoid Valve

P1760 2004 Nissan Altima Sedan - Overrun Clutch Solenoid Valve

Possible causes - Faulty overrun clutch solenoid valve - Overrun clutch solenoid valve harness is open or shorted - Overrun clutch solenoid valve circuit poor electrical connection When is the code d…

P1800 2004 Nissan Altima Sedan - Variable Intake Air System Control Solenoid Valve Circuit

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
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<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty VIAS control solenoid valve<br />
- VIAS control solenoid valve circuit harness is open or shorted<br />
- VIAS control solenoid valve circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The VIAS control solenoid valve cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator. An excessively low or high voltage signal is sent to ECM through the valve</div>
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</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
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</div>
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<strong style="margin: 0px; padding: 0px;">P1800 2004 Nissan Altima Sedan Description</strong></div>
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<div style="padding: 0px;">
When the engine is running at low or medium speed, the power valve is fully closed. Under this condition, the effective suction port length is equivalent to the total length of the intake manifold collector's suction port including the intake valve. This long suction port provides increased air intake which results in improved suction efficiency and higher torque generation.</div>
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<br /></div>
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The surge tank and one-way valve are provided. When engine is running at high speed, the Engine Control Module (ECM) sends the signal to the Variable Intake Air System (VIAS) control solenoid valve. This signal introduces the intake manifold vacuum into the power valve actuator and therefore opens the power valve to two suction passages together in the collector.</div>
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<br /></div>
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Under this condition, the effective port length is equivalent to the length of the suction port provided independently for each cylinder. This shortened port length results in enhanced engine output with reduced suction resistance under high speeds.</div>
</div>
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<br /></div>
</div>
</div>
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</div>

P1800 2004 Nissan Altima Sedan - Variable Intake Air System Control Solenoid Valve Circuit

Possible causes - Faulty VIAS control solenoid valve - VIAS control solenoid valve circuit harness is open or shorted - VIAS control solenoid valve circuit poor electrical connection When is the code…

P1805 2004 Nissan Altima Sedan - Stop Lamp Switch

P1805 2004 Nissan Altima Sedan - Stop Lamp Switch

Possible causes - Faulty Stop Lamp Switch - Stop Lamp Switch harness is open or shorted - Stop Lamp Switch circuit poor electrical connection Possible symptoms - Engine Light ON (or Service Engine So…

P2122 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Accelerator Pedal Position Sensor<br />
- Accelerator Pedal Position Sensor harness is open or shorted<br />
- Accelerator Pedal Position Sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- No Accelerator Pedal respsonse</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2122 2004 Nissan Altima Sedan Description</strong></div>
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<div style="padding: 0px;">
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.</div>
<div style="padding: 0px;">
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.</div>
<div style="padding: 0px;">
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation</div>
<div style="padding: 0px;">
such as fuel cut.</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P2122 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance" src="http://engine-codes.com/uploads/images/18478.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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</div>

P2122 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

Possible causes - Faulty Accelerator Pedal Position Sensor - Accelerator Pedal Position Sensor harness is open or shorted - Accelerator Pedal Position Sensor circuit poor electrical connection Possib…

P2123 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Accelerator Pedal Position Sensor<br />
- Accelerator Pedal Position Sensor harness is open or shorted<br />
- Accelerator Pedal Position Sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- No Accelerator Pedal respsonse</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2123 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.</div>
<div style="padding: 0px;">
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.</div>
<div style="padding: 0px;">
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation</div>
<div style="padding: 0px;">
such as fuel cut.</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P2123 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance" src="http://engine-codes.com/uploads/images/18478.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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P2123 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

P2127 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Harness or connectors(The APP sensor 2 circuit is open or shorted.)<br />
- Accelerator pedal position sensor(Accelerator pedal position sensor 2)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
An excessively low voltage from the APP sensor 2 is sent to ECM.</div>
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</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2127 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors</div>
<div style="padding: 0px;">
are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P2127 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit" src="http://engine-codes.com/uploads/images/18478.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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P2127 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit

Possible causes - Harness or connectors(The APP sensor 2 circuit is open or shorted.) - Accelerator pedal position sensor(Accelerator pedal position sensor 2) When is the code detected? An excessivel…

P2128 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Harness or connectors(The APP sensor 2 circuit is open or shorted.)<br />
- Accelerator pedal position sensor(Accelerator pedal position sensor 2)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
An excessively low voltage from the APP sensor 2 is sent to ECM.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2128 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors</div>
<div style="padding: 0px;">
are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals. Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P2128 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit" src="http://engine-codes.com/uploads/images/18478.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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P2128 2004 Nissan Altima Sedan - Accelerator Pedal Position APP Sensor Circuit

P2135 2004 Nissan Altima Sedan - Throttle Position Sensor Circuit Range/Performance

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Electric Throttle Control Actuator (TP sensor 1 and 2)<br />
- Electric Throttle Control Actuator harness is open or shorted<br />
- Electric Throttle Control Actuator circuit poor connection<br />
- Faulty Accelerator Pedal Position Sensor<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The code P2135 is set when the and incorrect voltage is sent to the Engine Control Module (ECM) compared with the signals from Throttle Position (TP) sensor 1 and Throttle Position (TP) sensor 2</div>
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</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2135 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.</div>
<div style="padding: 0px;">
<br /></div>
<div style="padding: 0px;">
The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P2135 2004 Nissan Altima Sedan - Throttle Position Sensor Circuit Range/Performance" src="http://engine-codes.com/uploads/images/18493.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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P2135 2004 Nissan Altima Sedan - Throttle Position Sensor Circuit Range/Performance

Possible causes - Faulty Electric Throttle Control Actuator (TP sensor 1 and 2) - Electric Throttle Control Actuator harness is open or shorted - Electric Throttle Control Actuator circuit poor conne…

P2138 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Accelerator Pedal Position Sensor<br />
- Accelerator Pedal Position Sensor harness is open or shorted<br />
- Accelerator Pedal Position Sensor circuit poor electrical connection<br />
- Faulty Electric Throttle Control Actuator</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- No Accelerator Pedal respsonse</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P2138 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.</div>
<div style="padding: 0px;">
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.</div>
<div style="padding: 0px;">
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation</div>
<div style="padding: 0px;">
such as fuel cut.</div>
</div>
<div style="margin: 0px; padding: 0px;">
<div style="text-align: center;">
<img alt="OBDII Code P2138 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance" src="http://engine-codes.com/uploads/images/18497.png" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
</div>
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</ul>
</div>

P2138 2004 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance

U1000 2004 Nissan Altima Sedan - CAN Communication Line - Signal Malfunction

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Controller Area Network (CAN) communication harness is open or shorted<br />
- Faulty Engine Control Module (ECM)<br />
- Poor harness ground connection.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Usually the problem is poor harness ground connection.<br />
<br style="margin: 0px; padding: 0px;" />
There is a service bulletin for the following Nissan models with U1000 code:<br />
<br style="margin: 0px; padding: 0px;" />
2002 Nissan Altima<br />
Nissan Factory Service Bulletin Code U1000<br />
<br style="margin: 0px; padding: 0px;" />
The service bulletin suggest cleaning engine and body harness ground connection to repair problem.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
When ECM is not transmitting or receiving CAN communication signal of OBD (emission related diagnosis) for 2 seconds or more.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">U1000 2004 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Controller Area Network (CAN) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.</div>
<div style="padding: 0px;">
Each control unit transmits/receives data but selectively reads required data only.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
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</ul>
</div>

U1000 2004 Nissan Altima Sedan - CAN Communication Line - Signal Malfunction

Possible causes - Controller Area Network (CAN) communication harness is open or shorted - Faulty Engine Control Module (ECM) - Poor harness ground connection. Tech notes Usually the problem is poor …

P0011 2005 Nissan Altima Sedan - Intake Valve Timing Control Performance Bank 1

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Intake Valve Timing Control Solenoid Valve<br />
- Intake Valve Timing Control Solenoid Valve harness is open or shorted<br />
- Intake Valve Timing Control Solenoid Valve circuit poor electrical connection<br />
- Faulty Camshaft Position Sensor<br />
- Engine coolant temperature sensor<br />
- Camshaft Position Sensor harness is open or shorted<br />
- Camshaft Position Sensor circuit poor electrical connection<br />
- Faulty Crankshaft Position Sensor (POS)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
When there is a gap between angle of target and phase-control angle degree, the valve will stop working and the ECM will trigger the P0011 code.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- Possible engine lack/loss of power<br />
- Posssible engine rough idle</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0011 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.</div>
<div style="padding: 0px;">
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.</div>
<div style="padding: 0px;">
The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
<div class="qa-q-view-tags" style="background-color: white; clear: both; color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 12px; margin: 0px 0px 12px; padding: 0px;">
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<li class="qa-q-view-tag-item" style="display: inline; margin: 0px; padding: 0px;"><a class="qa-tag-link" href="http://www.dtccode.com/tag/p0011+2005+nissan+altima+sedan" rel="tag" style="background-image: url(http://www.dtccode.com/qa-theme/Pixel_n_Grain_Light_V_L1.1/tag-icon.png); background-position: 0% 50%; background-repeat: no-repeat no-repeat; color: #3b5998; height: 16px; margin: 0px 4px 3px 0px; padding: 0px 0px 0px 18px; text-decoration: none; vertical-align: middle;">p0011 2005 nissan altima sedan</a></li>
</ul>
</div>

P0011 2005 Nissan Altima Sedan - Intake Valve Timing Control Performance Bank 1

Possible causes - Faulty Intake Valve Timing Control Solenoid Valve - Intake Valve Timing Control Solenoid Valve harness is open or shorted - Intake Valve Timing Control Solenoid Valve circuit poor e…

P0021 2005 Nissan Altima Sedan - Intake Valve Timing Control Performance Bank 2

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Intake Valve Timing Control Solenoid Valve<br />
- Intake Valve Timing Control Solenoid Valve harness is open or shorted<br />
- Intake Valve Timing Control Solenoid Valve circuit poor electrical connection<br />
- Faulty Camshaft Position Sensor<br />
- Camshaft Position Sensor harness is open or shorted<br />
- Camshaft Position Sensor circuit poor electrical connection<br />
- Faulty Crankshaft Position Sensor (POS)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
When there is a gap between angle of target and phase-control angle degree, the valve will stop working and the ECM will trigger the P0021 code.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- Lack/Loss of power<br />
- Engine rough idle</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0021 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.</div>
<div style="padding: 0px;">
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.</div>
<div style="padding: 0px;">
The intake valve timing control solenoid valve changes the oil amount and direction of flow through intake valve timing control unit or stops oil flow. The longer pulse width advances valve angle. The shorter pulse width retards valve angle. When ON and OFF pulse widths become equal, the solenoid valve stops oil pressure flow to fix the intake valve angle at the control position.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
<div class="qa-q-view-tags" style="background-color: white; clear: both; color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 12px; margin: 0px 0px 12px; padding: 0px;">
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</ul>
</div>

P0021 2005 Nissan Altima Sedan - Intake Valve Timing Control Performance Bank 2

P0037 2005 Nissan Altima Sedan - HO2S12 Heater Control Circuit Low

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection<br />
- Faulty Engine Control Module (ECM)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0037 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.</div>
<div style="padding: 0px;">
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
<div class="qa-q-view-tags" style="background-color: white; clear: both; color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 12px; margin: 0px 0px 12px; padding: 0px;">
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</ul>
</div>

P0037 2005 Nissan Altima Sedan - HO2S12 Heater Control Circuit Low

Possible causes - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted - Heat…

P0038 2005 Nissan Altima Sedan - HO2S12 Heater Control Circuit Low

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 fuse<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 harness is open or shorted<br />
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection<br />
- Faulty Engine Control Module (ECM)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0038 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.</div>
<div style="padding: 0px;">
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
<div class="qa-q-view-tags" style="background-color: white; clear: both; color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 12px; margin: 0px 0px 12px; padding: 0px;">
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</ul>
</div>

P0038 2005 Nissan Altima Sedan - HO2S12 Heater Control Circuit Low

P0057 2005 Nissan Altima Sedan - HO2S22 Heater Control Circuit Low

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse<br />
- Faulty Engine Control Module (ECM)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow, which is a very common problem for this type codes. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The P0057 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0057 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.</div>
<div style="padding: 0px;">
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
<div class="qa-q-view-tags" style="background-color: white; clear: both; color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 12px; margin: 0px 0px 12px; padding: 0px;">
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</ul>
</div>

P0057 2005 Nissan Altima Sedan - HO2S22 Heater Control Circuit Low

Possible causes - Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 - Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted - Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor e…

P0058 2005 Nissan Altima Sedan - HO2S22 Heater Control Circuit High

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection<br />
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse<br />
- Faulty Engine Control Module (ECM)<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
The P0058 is set when the ECM detects an excessively high voltage through the heated oxygen sensor heater circuit</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0058 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.</div>
<div style="padding: 0px;">
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
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</ul>
</div>

P0058 2005 Nissan Altima Sedan - HO2S22 Heater Control Circuit High

P0101 2005 Nissan Altima Sedan - Mass Air Flow Circuit Range/Performance

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty mass air flow sensor<br />
- Intake air leaks<br />
- Dirty mass air flow sensor<br />
- Dirty mass air filter<br />
- Mass air flow sensor harness is open or shorted<br />
- Mass air flow sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.<br />
<br style="margin: 0px; padding: 0px;" />
There is a factory service bulletin for the following Nissan Models:<br />
<br style="margin: 0px; padding: 0px;" />
2011-2012 Nissan Altima Sedan<br />
2011-2012 Nissan Altima Coupe<br />
2011-2012 Nissan Sentra<br />
2011-2012 Nissan Maxima<br />
2011-2012 Nissan Cube<br />
2011-2012 Nissan Pathfinder<br />
2011-2012 Nissan Xterra<br />
2011-2012 Nissan Frontier<br />
<br style="margin: 0px; padding: 0px;" />
If the P0101 code is set and there are no drivability problems, the factory service bulletin suggest reprogramming the Engine Control Module (ECM) to repair the problem. Bulletin No. NTB12-051d<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
- A high voltage from the sensor is sent to Engine Control Module (ECM) under light load driving condition.<br />
- A low voltage from the sensor is sent to ECM</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- Engine stall<br />
- Engine running rough<br />
- Excessive fuel consumption<br />
- Excessive smoke</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0101 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
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</ul>
</div>

P0101 2005 Nissan Altima Sedan - Mass Air Flow Circuit Range/Performance

Possible causes - Faulty mass air flow sensor - Intake air leaks - Dirty mass air flow sensor - Dirty mass air filter - Mass air flow sensor harness is open or shorted - Mass air flow sensor circuit …

P0102 2005 Nissan Altima Sedan - Mass or Volume Air Flow Circuit Low Input

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty mass air flow sensor<br />
- Intake air leaks<br />
- Dirty mass air flow sensor<br />
- Dirty mass air filter<br />
- Mass air flow sensor harness is open or shorted<br />
- Mass air flow sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
An excessively low voltage from the sensor is sent to Engine Control Module (ECM).</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- Engine stall<br />
- Engine running rough<br />
- Excessive fuel consumption<br />
- Excessive smoke</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0102 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
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P0102 2005 Nissan Altima Sedan - Mass or Volume Air Flow Circuit Low Input

P0103 2005 Nissan Altima Sedan - Mass Air Flow Sensor Circuit High Input

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty mass air flow sensor<br />
- Intake air leaks<br />
- Dirty mass air flow sensor<br />
- Dirty mass air filter<br />
- Mass air flow sensor harness is open or shorted<br />
- Mass air flow sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
An excessively high voltage from the sensor is sent to Engine Control Module (ECM).</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)<br />
- Engine stall<br />
- Engine running rough<br />
- Excessive fuel consumption<br />
- Excessive smoke</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0103 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Mass Air Flow (MAF) sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the Engine Control Module (ECM).</div>
<div style="padding: 0px;">
The temperature of the hot film is controlled by the ECM a certain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.</div>
</div>
<div style="padding: 0px;">
<br /></div>
</div>
</div>
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P0103 2005 Nissan Altima Sedan - Mass Air Flow Sensor Circuit High Input

P0112 2005 Nissan Altima Sedan - Intake Air Temperature Circuit Low Input

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Intake Air Temperature (IAT) sensor<br />
- Dirty air filter<br />
- Intake Air Temperature (IAT) sensor harness is open or shorted<br />
- Intake Air Temperature (IAT) sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Since the Intake Air Temperature (IAT) Sensor is par of the Mass Air Flow (MAF) Sensor, start by cleaning the MAF. If the problem persist the MAF may need to be replaced.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
An excessively low voltage from the sensor is sent to ECM.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0112 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. Sensor resistance will change based on air temperature. The higher the temperature is, the lower the resistance. The Engine Control Module (ECM) provides a reference voltage and monitors the voltage drop between a fixed value internal resistance and the sensor resistance. This is called a voltage divider circuit.</div>
<div style="padding: 0px;">
IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.</div>
<div style="padding: 0px;">
Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.</div>
<div style="padding: 0px;">
The Intake Air Temperature (IAT) sensor is part of the Mass Air Flow (MAF) sensor (Air Flow Meter).</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P0112 2005 Nissan Altima Sedan - Intake Air Temperature Circuit Low Input" src="http://engine-codes.com/uploads/images/17833.jpg" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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</ul>
</div>

P0112 2005 Nissan Altima Sedan - Intake Air Temperature Circuit Low Input

Possible causes - Faulty Intake Air Temperature (IAT) sensor - Dirty air filter - Intake Air Temperature (IAT) sensor harness is open or shorted - Intake Air Temperature (IAT) sensor circuit poor ele…

P0113 2005 Nissan Altima Sedan - Intake Air Temperature Sensor Circuit High

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty Intake Air Temperature (IAT) sensor<br />
- Dirty air filter<br />
- Intake Air Temperature (IAT) sensor harness is open or shorted<br />
- Intake Air Temperature (IAT) sensor circuit poor electrical connection<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
<div style="margin: 0px; padding: 0px;">
Since the Intake Air Temperature (IAT) Sensor is par of the Mass Air Flow (MAF) Sensor, start by cleaning the MAF. If the problem persist the MAF may need to be replaced.<br />
<div style="margin: 0px; padding: 0px;">
</div>
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
<div style="margin: 0px; padding: 0px;">
- An excessively high voltage from the sensor is sent to ECM.</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
<div style="margin: 0px; padding: 0px;">
</div>
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">P0113 2005 Nissan Altima Sedan Description</strong></div>
<div style="margin: 0px; padding: 0px;">
<div style="padding: 0px;">
The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. Sensor resistance will change based on air temperature. The higher the temperature is, the lower the resistance. The Engine Control Module (ECM) provides a reference voltage and monitors the voltage drop between a fixed value internal resistance and the sensor resistance. This is called a voltage divider circuit.</div>
<div style="padding: 0px;">
IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.</div>
<div style="padding: 0px;">
Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.</div>
<div style="padding: 0px;">
The Intake Air Temperature (IAT) sensor is part of the Mass Air Flow (MAF) sensor (Air Flow Meter).</div>
</div>
<div style="margin: 0px; padding: 0px; text-align: center;">
<img alt="OBDII Code P0113 2005 Nissan Altima Sedan - Intake Air Temperature Sensor Circuit High" src="http://engine-codes.com/uploads/images/17833.jpg" style="margin: 0px; padding: 0px;" /></div>
</div>
</div>
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P0113 2005 Nissan Altima Sedan - Intake Air Temperature Sensor Circuit High

P0117 2005 Nissan Altima Sedan - Engine Coolant Temperature Circuit Low

P0117 2005 Nissan Altima Sedan - Engine Coolant Temperature Circuit Low

Possible causes - Low engine coolant level - Faulty Engine Coolant Temperature (ECT) sensor - Faulty engine coolant thermostat - Engine Coolant Temperature (ECT) sensor harness is open or shorted - E…

P0118 2005 Nissan Altima Sedan - Engine Coolant Temperature Sensor Circuit High

P0118 2005 Nissan Altima Sedan - Engine Coolant Temperature Sensor Circuit High

P0122 2005 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit Low Input

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
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<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
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- Faulty throttle position sensor.<br />
- Throttle position sensor harness is open or shorted<br />
- Throttle position sensor circuit poor electrical connection<br />
- Faulty accelerator pedal position sensor<br />
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<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
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An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).</div>
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<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
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- Engine Light ON (or Service Engine Soon Warning Light)</div>
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<strong style="margin: 0px; padding: 0px;">P0122 2005 Nissan Altima Sedan Description</strong></div>
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The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.</div>
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Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.</div>
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P0122 2005 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit Low Input

Possible causes - Faulty throttle position sensor. - Throttle position sensor harness is open or shorted - Throttle position sensor circuit poor electrical connection - Faulty accelerator pedal posit…

P0123 2005 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit High Input

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
<div style="margin: 0px; padding: 0px;">
- Faulty throttle position sensor<br />
- Throttle position sensor harness is open or shorted<br />
- Throttle position sensor circuit poor electrical connection<br />
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</div>
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<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">When is the code detected?</strong></div>
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An excessively high voltage from the Throttle Position Sensor (TPS) '1' is sent to Engine Control Module (ECM).</div>
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<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
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- Engine Light ON (or Service Engine Soon Warning Light)</div>
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</div>
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<strong style="margin: 0px; padding: 0px;">P0123 2005 Nissan Altima Sedan Description</strong></div>
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<div style="padding: 0px;">
The Throttle Position Sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.</div>
<div style="padding: 0px;">
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.</div>
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P0123 2005 Nissan Altima Sedan - Throttle Position Sensor/Switch '1' Circuit High Input

Possible causes - Faulty throttle position sensor - Throttle position sensor harness is open or shorted - Throttle position sensor circuit poor electrical connection When is the code detected? An exc…

P0125 2005 Nissan Altima Sedan - Engine Coolant Temperature Sensor

P0125 2005 Nissan Altima Sedan - Engine Coolant Temperature Sensor

Possible causes - Low engine coolant level - Leaking or stuck open thermostat - Faulty Engine Coolant Temperature (ECT) sensor - Engine Coolant Temperature (ECT) sensor harness is open or shorted - E…

P0127 2005 Nissan Altima Sedan - Intake Air Temperature Too High

<div class="qa-q-view-content clearfix" style="color: #444444; font-family: 'Trebuchet MS', Tahoma, Arial, Helvetica, sans-serif; font-size: 13px; margin: 0px 0px 16px; padding: 0px;">
<div class="entry-content" style="margin: 0px; padding: 0px;">
<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible causes</strong></div>
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- Faulty Intake Air Temperature (IAT) sensor<br />
- Intake Air Temperature (IAT) sensor harness is open or shorted<br />
- Intake Air Temperature (IAT) sensor electrical circuit poor connection<br />
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<strong style="margin: 0px; padding: 0px;">Tech notes</strong></div>
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Since the Intake Air Temperature (IAT) Sensor is par of the Mass Air Flow (MAF) Sensor, start by cleaning the MAF. If the problem persist the MAF may need to be replaced.<br />
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<div style="margin: 0px; padding: 0px;">
<strong style="margin: 0px; padding: 0px;">Possible symptoms</strong></div>
<div style="margin: 0px; padding: 0px;">
- Engine Light ON (or Service Engine Soon Warning Light)</div>
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</div>
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<strong style="margin: 0px; padding: 0px;">P0127 2005 Nissan Altima Sedan Description</strong></div>
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The Intake Air Temperature (IAT) sensor is variable temperature sensitive resistor that measures the temperature of the air in the intake system. Sensor resistance will change based on air temperature. The higher the temperature is, the lower the resistance. The Engine Control Module (ECM) provides a reference voltage and monitors the voltage drop between a fixed value internal resistance and the sensor resistance. This is called a voltage divider circuit.</div>
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IAT sensor values are used by the ECM processor to assist with the calculation of idle speed, fuel mixture and spark advance.</div>
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Inaccurate voltages from the IAT sensor may affect pulse-width, idle quality, and tail pipe emissions. Intermittent signals may cause hesitation, stumble and surging. If an IAT sensor failure accompanies an Engine Coolant Temperature (ECT) sensor failure, cooling fan operation may also be affected.</div>
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The Intake Air Temperature (IAT) sensor is part of the Mass Air Flow (MAF) sensor (Air Flow Meter).</div>
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<img alt="OBDII Code P0127 2005 Nissan Altima Sedan - Intake Air Temperature Too High" src="http://engine-codes.com/uploads/images/17833.jpg" style="margin: 0px; padding: 0px;" /></div>
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P0127 2005 Nissan Altima Sedan - Intake Air Temperature Too High

Possible causes - Faulty Intake Air Temperature (IAT) sensor - Intake Air Temperature (IAT) sensor harness is open or shorted - Intake Air Temperature (IAT) sensor electrical circuit poor connection …

P0128 2005 Nissan Altima Sedan - Thermostat Function

P0128 2005 Nissan Altima Sedan - Thermostat Function

Possible causes - Leaking or stuck open thermostat - Low engine coolant level - Insufficient warm up time - Faulty engine coolant temperature sensor - Engine coolant temperature sensor harness is ope…

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