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Engine-Codes – Nissan – P2138 2007 Nissan Maxima

P2138 2007 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2138 code for a 2007 Nissan Maxima indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2138 2007 Nissan Maxima indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, ECM malfunction.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P2138 2007 Nissan Maxima Description

The P2138 code for a 2007 Nissan Maxima indicates a problem with the Accelerator Pedal Position Sensor Circuit Range/Performance. This code is triggered when the Engine Control Module (ECM) detects that the voltage signals from the accelerator pedal position sensor do not fall within the expected range. The accelerator pedal position sensor is a crucial component that communicates the position of the accelerator pedal to the ECM, which then adjusts the fuel injection and ignition timing accordingly.

OBDII Code P2138 2007 Nissan Maxima - Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 2007 Nissan Maxima Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2138 2007 Nissan Maxima

  1. Faulty accelerator pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. ECM malfunction
  4. Corrosion or contamination in the sensor connections
  5. Environmental factors such as extreme temperatures affecting sensor performance

Symptoms of P2138 2007 Nissan Maxima

  1. Reduced engine power
  2. Poor throttle response
  3. Hesitation or stalling when accelerating
  4. Difficulty starting the vehicle
  5. Illuminated Check Engine Light

How to Fix P2138 2007 Nissan Maxima

  1. Diagnose the issue using a scan tool to retrieve the fault code and examine the accelerator pedal position sensor circuit.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the accelerator pedal position sensor for proper functionality and voltage output. Replace if faulty.
  4. Clear the fault code from the ECM and perform a test drive to ensure the issue is resolved.
  5. If the problem persists, further diagnostic testing may be necessary to identify any underlying issues with the ECM or other components.

Cost to Fix P2138 2007 Nissan Maxima

The typical repair costs for addressing a P2138 code on a 2007 Nissan Maxima can vary depending on the specific cause of the issue. Generally, the cost of parts for replacing the accelerator pedal position sensor or repairing wiring/connectors can range from $100 to $300. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the issue. In total, the repair costs for resolving a P2138 code can range from $200 to $500 or more, including parts and labor. It is advisable to consult with a professional mechanic or auto repair shop for a more accurate cost estimate based on the specific diagnosis and repair requirements for your vehicle.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2138 2007 Nissan Maxima Code

1. What are the common symptoms of OBDII code P2138 in a 2007 Nissan Maxima?

Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

2. What causes the OBDII code P2138 in a 2007 Nissan Maxima?

The code P2138 is typically caused by a faulty accelerator pedal position sensor, a malfunctioning throttle position sensor, or issues with the wiring or connectors in the circuit.

3. How can I diagnose the OBDII code P2138 in my 2007 Nissan Maxima?

Diagnosis involves using an OBDII scanner to read the code, checking the throttle and accelerator pedal sensors for proper operation, and inspecting the wiring and connectors for any damage or loose connections.

4. Can I still drive my 2007 Nissan Maxima with the OBDII code P2138?

It is not recommended to drive the vehicle with the code P2138 as it can lead to unsafe driving conditions and potential further damage to the engine or transmission.

5. How can I repair the OBDII code P2138 in my 2007 Nissan Maxima?

Repair options include replacing the faulty accelerator pedal position sensor, throttle position sensor, or repairing any damaged wiring or connectors in the circuit.

6. Are there any DIY tips for fixing the OBDII code P2138 in a 2007 Nissan Maxima?

While some may attempt DIY repairs, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper functioning of the accelerator pedal position sensor circuit.

7. How much does it cost to fix the OBDII code P2138 in a 2007 Nissan Maxima?

The cost of repairing the code P2138 can vary depending on the exact cause of the issue, but it typically ranges from $200 to $500 for parts and labor.

8. Can a faulty accelerator pedal position sensor cause other OBDII codes to appear in a 2007 Nissan Maxima?

Yes, a faulty accelerator pedal position sensor can cause related codes such as P2135 (Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation) to appear in the vehicle's system.

9. Will resetting the OBDII code P2138 in a 2007 Nissan Maxima make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear once the problem is detected again.

10. How long does it take to repair the OBDII code P2138 in a 2007 Nissan Maxima?

The repair time for the code P2138 can vary depending on the extent of the issue and the availability of parts, but typically it can be fixed within a few hours to a day by a qualified mechanic.

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