AutoCodes – Nissan – P2138 2011 Nissan Sentra

P2138 2011 Nissan Sentra 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 Sentra 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 6,467

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

What does this mean?

What are the Possible Causes of the DTC P2138 2011 Nissan Sentra?

Faulty Accelerator Pedal Position Sensor
Accelerator Pedal Position Sensor harness is open or shorted
Accelerator Pedal Position Sensor circuit poor electrical connection
Crankshaft position sensor (POS)
Refrigerant pressure sensor
EVAP control system pressure sensor

How to Fix the DTC P2138 2011 Nissan Sentra?

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 Sentra 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 Sentra code?

Need more information on how to fix the P2138 2011 Nissan Sentra code? Get Access to Factory Service Manuals

Need Help with the 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 Sentra Code

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

The common symptoms of OBDII code P2138 in a 2011 Nissan Sentra include reduced engine power, sudden acceleration surges, and the vehicle going into limp mode.

2. What causes the OBDII code P2138 in a 2011 Nissan Sentra?

The code P2138 in a 2011 Nissan Sentra is typically triggered by issues with the accelerator pedal position sensor or the throttle position sensor, wiring problems, or a faulty electronic control module (ECM).

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

Diagnosing the OBDII code P2138 involves using a diagnostic scanner to retrieve the trouble codes, testing the accelerator pedal position sensor and throttle position sensor for proper functioning, and checking the wiring for any damage or loose connections.

4. Can I drive my 2011 Nissan Sentra with the OBDII code P2138 active?

It is not recommended to drive your 2011 Nissan Sentra with the OBDII code P2138 active, as it can lead to unsafe driving conditions due to potential loss of power or acceleration issues.

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

Repairing the OBDII code P2138 in a 2011 Nissan Sentra may involve replacing the accelerator pedal position sensor or throttle position sensor, repairing any damaged wiring, or reprogramming the electronic control module (ECM).

6. Will resetting the OBDII code P2138 in my 2011 Nissan Sentra fix the issue permanently?

Resetting the OBDII code P2138 may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, it is likely to reoccur.

7. Is it safe to continue driving my 2011 Nissan Sentra if the OBDII code P2138 comes on intermittently?

It is not recommended to continue driving your 2011 Nissan Sentra if the OBDII code P2138 comes on intermittently, as it indicates a potential issue with the accelerator pedal position sensor that can affect vehicle performance.

8. Can a DIY enthusiast repair the OBDII code P2138 in a 2011 Nissan Sentra?

While some basic troubleshooting steps can be done by a DIY enthusiast, repairing the OBDII code P2138 in a 2011 Nissan Sentra may require specialized tools and knowledge, so it is advisable to seek professional help.

9. How much does it cost to repair the OBDII code P2138 in a 2011 Nissan Sentra?

The cost to repair the OBDII code P2138 in a 2011 Nissan Sentra 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.

10. Can a faulty accelerator pedal position sensor cause other issues besides triggering the OBDII code P2138 in a 2011 Nissan Sentra?

Yes, a faulty accelerator pedal position sensor can cause other issues in a 2011 Nissan Sentra, such as poor fuel efficiency, rough idling, and problems with the transmission shifting smoothly.