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P2138 2011 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2138 diagnostic trouble code (DTC) for a 2011 Nissan Pathfinder indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues in the sensor circuit, ECM software or programming issues. 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 2011 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 or programming issues.
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 Aug 30, 2024
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Code P2138 2011 Nissan Pathfinder Description

The P2138 diagnostic trouble code (DTC) for a 2011 Nissan Pathfinder indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This means that the signal sent from the accelerator pedal position sensor to the engine control module (ECM) is outside the expected range or not performing as it should. The accelerator pedal position sensor is responsible for relaying the driver's input to the ECM, which then adjusts the throttle opening accordingly. A malfunction in this sensor can lead to a variety of performance issues and potentially compromise the vehicle's drivability.

OBDII Code P2138 2011 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 2011 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2138 2011 Nissan Pathfinder

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues in the sensor circuit
  3. ECM software or programming issues
  4. Throttle body malfunction
  5. Corrosion or damage to sensor components

Symptoms of P2138 2011 Nissan Pathfinder

  1. Reduced engine power or lack of response to accelerator input
  2. Stalling or hesitation when accelerating
  3. Illumination of the Check Engine Light
  4. Rough idling or uneven engine performance
  5. In severe cases, the vehicle may go into limp mode, limiting speed and acceleration

How to Fix P2138 2011 Nissan Pathfinder

  1. Begin by conducting a thorough inspection of the accelerator pedal position sensor and its wiring harness for any visible damage or corrosion.
  2. Test the sensor's output signal using a multimeter to ensure it is within the specified range.
  3. If the sensor is faulty, replace it with a new one following manufacturer's guidelines.
  4. Check and repair any damaged wiring or connectors in the sensor circuit.
  5. Clear the DTC with a diagnostic scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2138 2011 Nissan Pathfinder

The cost of repairing a P2138 code on a 2011 Nissan Pathfinder can vary depending on the specific cause of the issue. Replacement of the accelerator pedal position sensor itself may cost between $100 and $200, while labor charges could range from $80 to $150 per hour. Additional costs may arise if there are other components that need to be replaced or repaired. It is recommended to consult with a mechanic or auto repair shop for a more accurate estimate based on the individual circumstances.

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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 2011 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2138 in a 2011 Nissan Pathfinder?

The common symptoms of code P2138 include issues with acceleration, reduced engine power, unresponsive throttle, and possibly the vehicle going into limp mode.

2. What are the possible causes of OBDII code P2138 in a 2011 Nissan Pathfinder?

The potential causes of code P2138 include a faulty accelerator pedal position sensor, problems with the throttle body, issues with the wiring or connectors in the accelerator pedal circuit, or a malfunctioning engine control module (ECM).

3. How can I diagnose OBDII code P2138 in my 2011 Nissan Pathfinder?

Diagnosing code P2138 usually involves using a scan tool to retrieve the trouble codes, checking the wiring and connectors in the accelerator pedal circuit, testing the accelerator pedal position sensor, and inspecting the throttle body for any signs of malfunction.

4. Can I continue driving my 2011 Nissan Pathfinder with OBDII code P2138?

It is not recommended to drive your vehicle with code P2138 as it can lead to safety issues and potential further damage to the engine. It is advisable to address the issue promptly to prevent any complications.

5. How can I repair OBDII code P2138 in my 2011 Nissan Pathfinder?

Repairing code P2138 may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the throttle body, or reprogramming the engine control module (ECM) if necessary.

6. Does resetting the check engine light resolve OBDII code P2138 in a 2011 Nissan Pathfinder?

Simply resetting the check engine light will not resolve code P2138 as it indicates a specific issue with the accelerator pedal position sensor circuit. It is essential to diagnose and address the root cause of the problem.

7. How much does it typically cost to repair OBDII code P2138 in a 2011 Nissan Pathfinder?

The cost of repairing code P2138 can vary depending on the underlying issue, parts needed for replacement, and labor costs. It is advisable to consult a mechanic or dealership for an accurate estimate based on your specific situation.

8. Can a DIY enthusiast fix OBDII code P2138 in a 2011 Nissan Pathfinder?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing code P2138 may require specialized tools and expertise. It is recommended to seek professional help if you are not experienced in automotive repairs.

9. How urgent is it to address OBDII code P2138 in a 2011 Nissan Pathfinder?

It is crucial to address code P2138 promptly to avoid potential safety hazards and further damage to the vehicle. Ignoring the issue can lead to engine performance issues and unsafe driving conditions.

10. Can extreme weather conditions affect the occurrence of OBDII code P2138 in a 2011 Nissan Pathfinder?

Extreme weather conditions can potentially impact the performance of sensors and electronic components in the accelerator pedal position circuit, which may contribute to the occurrence of code P2138. It is essential to keep the vehicle well-maintained to minimize such risks.

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