P2138 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado?
- 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 2018 Chevrolet Silverado?
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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?
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Frequently Asked Questions about P2138 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P2138 in a 2018 Chevrolet Silverado?
The common symptoms of code P2138 include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into "limp mode."
2. What does the OBDII code P2138 indicating Accelerator Pedal Position Sensor 1-2 Correlation mean in a 2018 Chevrolet Silverado?
Code P2138 indicates that there is a correlation problem between the two accelerator pedal position sensors in the vehicle.
3. What are the possible causes of OBDII code P2138 in a 2018 Chevrolet Silverado?
Possible causes of code P2138 include a faulty accelerator pedal position sensor, damaged wiring or connectors, or issues with the electronic throttle control system.
4. How can I diagnose the OBDII code P2138 in my 2018 Chevrolet Silverado?
Diagnosing code P2138 typically involves using a scan tool to check for the code, inspecting the accelerator pedal position sensor and related wiring, and performing a throttle body inspection.
5. Can I continue to drive my 2018 Chevrolet Silverado with OBDII code P2138?
It is not recommended to drive your vehicle with code P2138 as it can lead to unsafe driving conditions and further damage to the engine.
6. How can I repair OBDII code P2138 in my 2018 Chevrolet Silverado?
Repairing code P2138 may involve replacing the faulty accelerator pedal position sensor, repairing any damaged wiring or connectors, and clearing the code with a scan tool.
7. Is it possible to reset the OBDII code P2138 in a 2018 Chevrolet Silverado without repairing the issue?
While you can clear the code temporarily with a scan tool, it is crucial to address the underlying issue causing code P2138 to prevent further problems.
8. Can a DIY enthusiast fix OBDII code P2138 in a 2018 Chevrolet Silverado?
Depending on your skill level, you may be able to replace the accelerator pedal position sensor yourself, but it is recommended to consult a professional for accurate diagnosis and repair.
9. Will OBDII code P2138 cause permanent damage to my 2018 Chevrolet Silverado if left untreated?
Continuing to drive with code P2138 unresolved can potentially cause further damage to the vehicle's engine and components, so it is best to address the issue promptly.
10. How much does it typically cost to repair OBDII code P2138 in a 2018 Chevrolet Silverado?
The cost of repairing code P2138 can vary depending on the extent of the issue and whether you choose to replace the sensor yourself or seek professional help. Costs may include parts and labor.
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