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P2138 2006 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2138 diagnostic trouble code (DTC) specifically relates to the Accelerator Pedal Position Sensor Circuit Range/Performance in a 2006 Nissan Pathfinder. Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the sensor circuit, ECM software 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 2006 Nissan Pathfinder indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the sensor circuit, ECM software 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 06, 2024
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Code P2138 2006 Nissan Pathfinder Description

The P2138 diagnostic trouble code (DTC) specifically relates to the Accelerator Pedal Position Sensor Circuit Range/Performance in a 2006 Nissan Pathfinder. This code indicates that there is an issue with the signal sent from the accelerator pedal position sensor to the engine control module (ECM). The accelerator pedal position sensor is a crucial component that communicates the position of the pedal to the ECM, which then adjusts the fuel and air mixture for optimal engine performance. When this sensor malfunctions, it can lead to poor acceleration, rough idling, and potential safety hazards while driving.

OBDII Code P2138 2006 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 2006 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2138 2006 Nissan Pathfinder

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues in the sensor circuit
  3. ECM software malfunction
  4. Corrosion or damage to sensor components
  5. Electrical interference or short circuits

Symptoms of P2138 2006 Nissan Pathfinder

  1. Loss of power or hesitation when accelerating
  2. Engine stalling or surging
  3. Rough idling or inconsistent engine performance
  4. Illumination of the check engine light
  5. Reduced fuel efficiency

How to Fix P2138 2006 Nissan Pathfinder

  1. Diagnose the issue by using a scan tool to retrieve the trouble codes and inspecting the accelerator pedal position sensor and circuit.
  2. Test the sensor's resistance and voltage outputs to determine if it is functioning correctly.
  3. Check for any wiring or connector damage and repair or replace as necessary.
  4. Clear the trouble codes and reset the ECM to see if the issue persists.
  5. If the problem persists, consider replacing the accelerator pedal position sensor or seeking professional assistance for further diagnosis.

Cost to Fix P2138 2006 Nissan Pathfinder

The typical repair costs for addressing a P2138 code in a 2006 Nissan Pathfinder can range from $150 to $400. This estimate includes the cost of parts such as a new accelerator pedal position sensor and potential labor charges. However, actual costs may vary based on the specific diagnosis time and labor rates at the auto repair shop. It is recommended to inquire about local rates to get a more accurate estimate for this repair.

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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 2006 Nissan Pathfinder Code

1. What are common symptoms of OBDII code P2138 in a 2006 Nissan Pathfinder?

- Common symptoms include a lack of throttle response, reduced engine power, and the vehicle going into a limp mode.

2. What does the OBDII code P2138 for a 2006 Nissan Pathfinder indicate?

- This code indicates an issue with the accelerator pedal position sensor circuit range/performance.

3. What are possible causes of OBDII code P2138 in a 2006 Nissan Pathfinder?

- Possible causes include a faulty accelerator pedal position sensor, wiring issues, or a problem with the throttle body.

4. How can I diagnose the OBDII code P2138 in my 2006 Nissan Pathfinder?

- Diagnosing this code typically involves checking the accelerator pedal position sensor, inspecting the wiring for any damage, and testing the throttle body.

5. Can I drive my 2006 Nissan Pathfinder with the OBDII code P2138?

- It is not recommended to drive the vehicle with this code as it can lead to safety issues and further damage to the engine.

6. How should I repair OBDII code P2138 in my 2006 Nissan Pathfinder?

- Repairing this code may involve replacing the accelerator pedal position sensor, repairing any damaged wiring, or cleaning/replacing the throttle body.

7. Is it possible to reset the OBDII code P2138 in my 2006 Nissan Pathfinder without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, the issue causing the code will likely persist and trigger the code again in the future.

8. Can a DIY enthusiast fix the OBDII code P2138 in a 2006 Nissan Pathfinder?

- Depending on the root cause of the issue, some DIY enthusiasts may be able to fix the problem by replacing the accelerator pedal position sensor or addressing wiring issues.

9. How much does it typically cost to repair OBDII code P2138 in a 2006 Nissan Pathfinder?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Will the OBDII code P2138 cause my 2006 Nissan Pathfinder to fail an emissions test?

- Yes, this code can cause your vehicle to fail an emissions test due to the impact on engine performance and emissions control systems.

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