P2138 2014 GMC Sierra Code - Accelerator Pedal Position Sensor 1-2 Correlation
Quick Answer
The Accelerator Pedal Assembly contains 2 Accelerator Pedal Position (APP) sensors. 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 2014 GMC Sierra indicates Accelerator Pedal Position Sensor 1-2 Correlation.
- 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.
Code P2138 2014 GMC Sierra Description
Both the APP sensors 1 and 2 signal percentages increase as the pedal is depressed, from approximately 0 percent at rest to above 95 percent when fully depressed.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects that APP sensor 1 and APP sensor 2 disagree greater than 10 percent for less than 1 s or the ECM detects that both APP sensor 1 and APP sensor 2 are 5 percent greater than the learned minimum position for less than 1 s.
What are the Possible Causes of the DTC P2138 2014 GMC Sierra?
- Faulty Accelerator Pedal Position Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2138 2014 GMC Sierra?
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 2014 GMC Sierra 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 2014 GMC Sierra code?
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Frequently Asked Questions about P2138 2014 GMC Sierra Code
1. What does OBDII code P2138 on a 2014 GMC Sierra mean?
The P2138 code indicates an issue with the correlation between accelerator pedal position sensors 1 and 2 in a 2014 GMC Sierra.
2. What are the common symptoms of OBDII code P2138 in a 2014 GMC Sierra?
Common symptoms include reduced engine power, hesitation when accelerating, illuminated Check Engine Light, and potential difficulty maintaining speed.
3. What are the possible causes of OBDII code P2138 in a 2014 GMC Sierra?
Potential causes of P2138 include a faulty accelerator pedal position sensor, wiring issues, sensor calibration problems, or a malfunction in the engine control module.
4. How can I diagnose the OBDII code P2138 on my 2014 GMC Sierra?
Diagnosing P2138 typically involves using a scan tool to retrieve the code, checking the wiring and connectors related to the accelerator pedal position sensors, and testing the sensors themselves for proper operation.
5. Can I drive my 2014 GMC Sierra with OBDII code P2138?
It is not recommended to drive your vehicle with code P2138 as it can lead to unsafe driving conditions and potential further damage to the vehicle.
6. How can I repair OBDII code P2138 on a 2014 GMC Sierra?
Repairing P2138 may involve replacing the faulty accelerator pedal position sensor, repairing any damaged wiring, recalibrating the sensors, or reprogramming the engine control module.
7. Is it possible to clear the OBDII code P2138 on a 2014 GMC Sierra without fixing the issue?
Clearing the code without addressing the underlying problem may temporarily turn off the Check Engine Light, but the issue causing P2138 will likely persist and trigger the code again.
8. Can a DIY enthusiast fix OBDII code P2138 on a 2014 GMC Sierra?
Depending on your skill level and access to tools, DIY enthusiasts may be able to address simple causes of P2138 like sensor replacement, but more complex issues may require professional assistance.
9. How much does it cost to repair OBDII code P2138 on a 2014 GMC Sierra?
The cost of repairing P2138 can vary depending on the specific cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.
10. How can I prevent OBDII code P2138 from occurring in the future on my 2014 GMC Sierra?
To prevent P2138, it's important to perform regular maintenance checks, address any accelerator pedal-related issues promptly, and avoid driving habits that could strain the sensors.
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