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Engine-Codes – Nissan – P2138 2008 Nissan Sentra

P2138 2008 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Quick Answer

The P2138 code on a 2008 Nissan Sentra indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. Common causes include Faulty accelerator pedal position sensor, Wiring issues such as shorts or opens in the circuit, Poor electrical connections. 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 2008 Nissan Sentra indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring issues such as shorts or opens in the circuit, Poor electrical connections.
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 11, 2024
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Code P2138 2008 Nissan Sentra Description

The P2138 code on a 2008 Nissan Sentra indicates an issue with the Accelerator Pedal Position Sensor Circuit Range/Performance. The accelerator pedal position sensor is responsible for sending the signal to the engine control module (ECM) regarding the position of the accelerator pedal. This information is crucial for the ECM to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P2138 2008 Nissan Sentra - Accelerator Pedal Position Sensor Circuit Range/Performance
P2138 2008 Nissan Sentra Code - Accelerator Pedal Position Sensor Circuit Range/Performance

Common Causes of P2138 2008 Nissan Sentra

  1. Faulty accelerator pedal position sensor
  2. Wiring issues such as shorts or opens in the circuit
  3. Poor electrical connections
  4. Malfunctioning ECM

Symptoms of P2138 2008 Nissan Sentra

  1. Hesitation or lack of response when pressing the accelerator pedal
  2. Surging or jerking during acceleration
  3. Engine stalling or idling erratically
  4. Reduced engine power or limp mode activation

How to Fix P2138 2008 Nissan Sentra

  1. Begin by performing a thorough inspection of the accelerator pedal position sensor and wiring harness for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's resistance and voltage output to determine if it is within specifications.
  3. Check the wiring harness for continuity and repair any damaged wires or connections as needed.
  4. If the sensor and wiring check out, consider testing the ECM for proper functionality or consult a professional for further diagnosis.
  5. Clear the fault codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2138 2008 Nissan Sentra

The cost of repairing the P2138 code on a 2008 Nissan Sentra can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the cost can range from $150 to $500 for parts and labor. However, it is essential to note that labor rates can vary greatly depending on the location and the auto repair shop. It is advisable to contact local shops for accurate pricing information.

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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 2008 Nissan Sentra Code

1. What are the common symptoms of OBDII code P2138 in a 2008 Nissan Sentra?

The common symptoms of OBDII code P2138 in a 2008 Nissan Sentra include reduced engine power, hesitation or stalling when accelerating, and a lit-up Check Engine Light.

2. What does the OBDII code P2138 in a 2008 Nissan Sentra indicate?

OBDII code P2138 in a 2008 Nissan Sentra indicates a malfunction in the Accelerator Pedal Position Sensor Circuit Range/Performance.

3. What are the possible causes of OBDII code P2138 in a 2008 Nissan Sentra?

Possible causes of OBDII code P2138 in a 2008 Nissan Sentra include a faulty accelerator pedal position sensor, issues with the throttle position sensor, wiring or connector issues, or a problem with the electronic throttle control system.

4. How can I diagnose the OBDII code P2138 in my 2008 Nissan Sentra?

Diagnosing OBDII code P2138 in a 2008 Nissan Sentra involves using a scan tool to retrieve the trouble codes, inspecting the accelerator pedal position sensor and related components for damage, and testing the sensor's voltage and resistance.

5. Can I continue to drive my 2008 Nissan Sentra with OBDII code P2138?

It is not recommended to continue driving your 2008 Nissan Sentra with OBDII code P2138, as it can lead to further damage to the engine or drivability issues. It is best to address the issue promptly.

6. How can I repair OBDII code P2138 in my 2008 Nissan Sentra?

Repairing OBDII code P2138 in a 2008 Nissan Sentra may involve replacing the accelerator pedal position sensor, repairing any wiring or connector issues, or recalibrating the electronic throttle control system.

7. Are there any DIY tips for addressing OBDII code P2138 in my 2008 Nissan Sentra?

While some may attempt DIY repairs for OBDII code P2138, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

8. How much does it typically cost to fix OBDII code P2138 in a 2008 Nissan Sentra?

The cost to fix OBDII code P2138 in a 2008 Nissan Sentra can vary depending on the underlying cause of the issue, but it may range from $200 to $500 or more, including parts and labor.

9. Can resetting the ECU clear OBDII code P2138 in my 2008 Nissan Sentra?

Resetting the ECU may temporarily clear the OBDII code P2138, but if the underlying issue is not addressed, the code is likely to reappear. It is best to diagnose and repair the root cause of the problem.

10. Is OBDII code P2138 a common issue in 2008 Nissan Sentras?

While OBDII code P2138 is not extremely common in 2008 Nissan Sentras, it can occur due to sensor or system failures. Proper maintenance and addressing any related issues promptly can help prevent this code from appearing.

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