P2138 2017 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 2017 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 2017 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 2017 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 2017 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 2017 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.
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Frequently Asked Questions about P2138 2017 Chevrolet Silverado Code
1. What does the OBDII code P2138 on a 2017 Chevrolet Silverado indicate?
The code P2138 indicates a problem with the correlation between Accelerator Pedal Position Sensor 1 and Sensor 2.
2. What are the common symptoms of a P2138 code in a 2017 Chevrolet Silverado?
Common symptoms include reduced engine power, hesitation or stalling when accelerating, and illuminated Check Engine Light.
3. What are the possible causes of the P2138 code in a 2017 Chevrolet Silverado?
Possible causes include a faulty accelerator pedal position sensor, issues with the wiring or connectors, or problems with the electronic throttle control system.
4. How can I diagnose the P2138 code on my 2017 Chevrolet Silverado?
Diagnosing the code involves using a scan tool to retrieve and interpret the trouble codes, testing the accelerator pedal position sensors, and inspecting the related wiring and connectors for damage or corrosion.
5. Is it safe to drive with a P2138 code in a 2017 Chevrolet Silverado?
It is not recommended to drive with a P2138 code as it can lead to unsafe driving conditions due to potential power loss or stalling.
6. Can I repair the P2138 code in my 2017 Chevrolet Silverado myself?
Depending on your mechanical skills, you may be able to replace the faulty accelerator pedal position sensor yourself. However, for more complex issues with the throttle control system, it's best to consult a professional mechanic.
7. How much does it typically cost to repair a P2138 code in a 2017 Chevrolet Silverado?
The cost of repairs can vary depending on the exact cause of the issue. Replacing the accelerator pedal position sensor can range from $100 to $200, but additional repairs may be needed, potentially increasing the cost.
8. Are there any preventive measures to avoid the P2138 code in a 2017 Chevrolet Silverado?
Regular maintenance, such as checking and cleaning connectors, inspecting wiring for damage, and promptly addressing any issues with the throttle control system, can help prevent the occurrence of the P2138 code.
9. Will resetting the trouble codes make the P2138 code in a 2017 Chevrolet Silverado disappear?
Resetting the trouble codes may temporarily clear the Check Engine Light, but if the underlying issue causing the P2138 code is not fixed, the code is likely to reappear.
10. How long does it take to repair a P2138 code in a 2017 Chevrolet Silverado?
The repair time can vary depending on the exact cause of the code and the extent of the repairs needed. Simple sensor replacement can usually be done in a couple of hours, while more complex issues may take longer to diagnose and repair.
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