AutoCodes – Nissan – P2138 2011 Nissan Altima Sedan

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

Quick Answer

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection. 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 Altima Sedan indicates Accelerator Pedal Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Accelerator Pedal Position Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position Sensor circuit poor electrical connection.
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.

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Code Popularity 3,636

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2138 2011 Nissan Altima Sedan Description

The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.

OBDII Code P2138 2011 Nissan Altima Sedan - Accelerator Pedal Position Sensor Circuit Range/Performance - AutoCodes.com — P2138 2011 Nissan Altima Sedan Code - Accelerator Pedal Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P2138 2011 Nissan Altima Sedan?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Faulty Electric Throttle Control Actuator

How to Fix the DTC P2138 2011 Nissan Altima Sedan?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2138 2011 Nissan Altima Sedan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2138 2011 Nissan Altima Sedan code?

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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 Altima Sedan Code

1. What is OBDII code P2138 on a 2011 Nissan Altima Sedan?

- OBDII code P2138 for a 2011 Nissan Altima Sedan refers to a fault in the accelerator pedal position sensor circuit, indicating a range/performance issue.

2. What are the common symptoms of OBDII code P2138 in a 2011 Nissan Altima Sedan?

- Common symptoms of OBDII code P2138 in a 2011 Nissan Altima Sedan include reduced engine power, hesitation or stalling when accelerating, and potentially triggering the vehicle into limp mode.

3. What are the possible causes of OBDII code P2138 on a 2011 Nissan Altima Sedan?

- Possible causes of OBDII code P2138 in a 2011 Nissan Altima Sedan include a faulty accelerator pedal position sensor, issues with the wiring or connectors in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose OBDII code P2138 on my 2011 Nissan Altima Sedan?

- Diagnosing OBDII code P2138 on a 2011 Nissan Altima Sedan typically involves using a scan tool to retrieve the trouble codes, checking the accelerator pedal position sensor for proper operation, and inspecting the sensor circuit for any faults.

5. Can I still drive my 2011 Nissan Altima Sedan with OBDII code P2138?

- It is not recommended to drive your 2011 Nissan Altima Sedan with OBDII code P2138, as it can lead to performance issues and potential safety hazards. It's best to address the problem promptly.

6. How do I repair OBDII code P2138 on my 2011 Nissan Altima Sedan?

- Repairing OBDII code P2138 on a 2011 Nissan Altima Sedan may involve replacing the accelerator pedal position sensor, repairing any damaged wiring or connectors, or reprogramming the engine control module if necessary.

7. Is it possible to reset OBDII code P2138 on a 2011 Nissan Altima Sedan without fixing the underlying issue?

- While you can clear the trouble codes to temporarily reset OBDII code P2138 on a 2011 Nissan Altima Sedan, the issue will likely reoccur if the underlying problem with the accelerator pedal position sensor circuit is not addressed.

8. How much does it cost to fix OBDII code P2138 on a 2011 Nissan Altima Sedan?

- The cost to fix OBDII code P2138 on a 2011 Nissan Altima Sedan can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast repair OBDII code P2138 on a 2011 Nissan Altima Sedan?

- While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P2138 on a 2011 Nissan Altima Sedan, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure safety and accuracy.

10. What is the long-term impact of ignoring OBDII code P2138 on a 2011 Nissan Altima Sedan?

- Ignoring OBDII code P2138 on a 2011 Nissan Altima Sedan can lead to continued performance issues, potential damage to other components, reduced fuel efficiency, and may eventually result in more costly repairs if left unaddressed.