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P2138 2010 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2138 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder refers to an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Malfunctioning throttle position sensor, Damaged wiring or connectors in the sensor circuit. 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 2010 Nissan Pathfinder indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Malfunctioning throttle position sensor, Damaged wiring or connectors in the sensor circuit.
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 17, 2024
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Code P2138 2010 Nissan Pathfinder Description

The P2138 diagnostic trouble code (DTC) for a 2010 Nissan Pathfinder refers to an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. This code indicates that the signal from the accelerator pedal position sensor (APPS) does not match the signal from the throttle position sensor (TPS) within a specified range. The APPS is responsible for sending the driver's input to the engine control module (ECM) to adjust the throttle opening, while the TPS monitors the actual position of the throttle valve.

OBDII Code P2138 2010 Nissan Pathfinder - Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 2010 Nissan Pathfinder Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2138 2010 Nissan Pathfinder

  1. Faulty accelerator pedal position sensor.
  2. Malfunctioning throttle position sensor.
  3. Damaged wiring or connectors in the sensor circuit.
  4. Corrosion or contamination affecting sensor signals.
  5. ECM software or hardware issues.

Symptoms of P2138 2010 Nissan Pathfinder

  1. Engine hesitation or lack of response when pressing the accelerator pedal.
  2. Reduced engine power or limited speed while driving.
  3. Illumination of the Check Engine Light on the dashboard.
  4. Rough idling or stalling when coming to a stop.
  5. Difficulty maintaining a constant speed while driving.

How to Fix P2138 2010 Nissan Pathfinder

  1. Begin by conducting a visual inspection of the accelerator pedal position sensor, throttle position sensor, and related wiring for any visible damage or corrosion.
  2. Use a multimeter to test the resistance and voltage output of the sensors according to the manufacturer's specifications.
  3. If the sensors are within range, check the wiring harnesses and connectors for continuity and proper connection.
  4. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consider replacing the faulty sensor or addressing any underlying ECM issues.

Cost to Fix P2138 2010 Nissan Pathfinder

The cost of repairing a P2138 code on a 2010 Nissan Pathfinder can vary depending on the specific cause of the issue. In general, replacing a faulty accelerator pedal position sensor or throttle position sensor can range from $100 to $300 for parts, with additional labor costs of $100 to $200. If wiring repairs or ECM reprogramming are necessary, the total repair cost could increase. It's recommended to consult with a qualified mechanic or dealership for an accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates can vary between different auto repair shops, so it's advisable to inquire about rates in your local area.

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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 2010 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2138 in a 2010 Nissan Pathfinder?

- Common symptoms include reduced engine power, hesitation or jerking during acceleration, and the vehicle going into limp mode.

2. What causes the OBDII code P2138 in a 2010 Nissan Pathfinder?

- The code P2138 is typically triggered by a fault in the accelerator pedal position sensor circuit, which may be caused by a faulty sensor, wiring issues, or a problem with the throttle body.

3. How serious is the OBDII code P2138 in a 2010 Nissan Pathfinder?

- While the vehicle may still be operable in some cases, it is important to address this issue promptly as it can affect the vehicle's performance and potentially lead to safety concerns.

4. Can I continue driving my 2010 Nissan Pathfinder with the OBDII code P2138?

- It is not recommended to drive the vehicle with the P2138 code present, as it can lead to unreliable throttle response and potentially unsafe driving conditions.

5. How can I diagnose the OBDII code P2138 in my 2010 Nissan Pathfinder?

- Diagnosing the P2138 code typically involves using a scan tool to retrieve the code, checking the accelerator pedal position sensor for proper operation, and inspecting related wiring for any issues.

6. Is it possible to repair the OBDII code P2138 in a 2010 Nissan Pathfinder myself?

- While some DIY enthusiasts may attempt to diagnose and repair the issue, it is recommended to have a qualified mechanic inspect and repair the accelerator pedal position sensor circuit to ensure proper functioning.

7. What are the repair options for the OBDII code P2138 in a 2010 Nissan Pathfinder?

- Repair options may include replacing the accelerator pedal position sensor, repairing or replacing damaged wiring, or addressing any underlying issues with the throttle body.

8. How much does it cost to fix the OBDII code P2138 in a 2010 Nissan Pathfinder?

- The cost of repairing the P2138 code can vary depending on the root cause of the issue, but it may involve parts and labor expenses ranging from $200 to $500 or more.

9. Will resetting the OBDII code P2138 in my 2010 Nissan Pathfinder make it go away permanently?

- Resetting the code without addressing the underlying issue will not permanently resolve the problem. It is important to diagnose and repair the root cause of the code to prevent it from recurring.

10. How can I prevent the OBDII code P2138 from reoccurring in my 2010 Nissan Pathfinder?

- To prevent the P2138 code from reoccurring, regular maintenance of the accelerator pedal position sensor and related components, as well as addressing any wiring issues promptly, is recommended.

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