P2138 2017 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1-2 Correlation
Quick Answer
The P2138 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates an issue with the correlation between Accelerator Pedal Position Sensor 1 and Accelerator Pedal Position Sensor 2. Common causes include Faulty Accelerator Pedal Position Sensor 1 or Sensor 2, Damaged wiring harness or connectors, Corrosion or poor electrical connections. 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 1 or Sensor 2, Damaged wiring harness or connectors, Corrosion or poor electrical connections.
- 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 P2138 2017 Chevrolet Silverado Description
The P2138 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates an issue with the correlation between Accelerator Pedal Position Sensor 1 and Accelerator Pedal Position Sensor 2. These sensors are crucial components of the vehicle's electronic throttle control system, which is responsible for translating the driver's input on the accelerator pedal into the appropriate throttle opening to control the engine's power output.
Common Causes of P2138 2017 Chevrolet Silverado
- Faulty Accelerator Pedal Position Sensor 1 or Sensor 2
- Damaged wiring harness or connectors
- Corrosion or poor electrical connections
- Issues with the engine control module (ECM)
- Environmental factors such as moisture or debris affecting sensor operation
Symptoms of P2138 2017 Chevrolet Silverado
- Rough idling or unstable engine speed
- Hesitation or lack of response when pressing the accelerator pedal
- Reduced engine power or inability to accelerate smoothly
- Stalling or difficulty starting the engine
- Illumination of the check engine light on the dashboard
How to Fix P2138 2017 Chevrolet Silverado
- Begin by diagnosing the specific cause of the P2138 code using a scan tool to monitor the sensor signals and identify any discrepancies.
- Inspect the wiring harnesses and connectors for damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the Accelerator Pedal Position Sensor 1 and Sensor 2 for proper operation using a multimeter or oscilloscope. Replace any faulty sensors.
- Clear the DTC and reset the ECM to see if the code reappears after repairs. Drive the vehicle to confirm that the symptoms have been resolved.
- If the issue persists, further diagnostic testing may be required to pinpoint the exact source of the problem, such as a malfunctioning ECM or intermittent electrical issue.
Cost to Fix P2138 2017 Chevrolet Silverado
The typical repair costs for addressing a P2138 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing a faulty Accelerator Pedal Position Sensor or repairing wiring harnesses and connectors can range from $200 to $500, including parts and labor. Additional diagnostic time and potential ECM replacement could increase the total cost.
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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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