P2138 2018 Chevrolet Silverado Code - Accelerator Pedal Position Sensor 1-2 Correlation
Quick Answer
The P2138 diagnostic trouble code (DTC) for a 2018 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 or connectors, ECM software issues. 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 1 or Sensor 2, Damaged wiring or connectors, ECM software issues.
- 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 2018 Chevrolet Silverado Description
The P2138 diagnostic trouble code (DTC) for a 2018 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 regulates the amount of air entering the engine based on the driver's input through the accelerator pedal. When the sensors do not provide consistent or matching signals, it can lead to various performance issues and potentially unsafe driving conditions.
Common Causes of P2138 2018 Chevrolet Silverado
- Faulty Accelerator Pedal Position Sensor 1 or Sensor 2
- Damaged wiring or connectors
- ECM software issues
- Exposure to moisture or contaminants
- Electrical system malfunctions
Symptoms of P2138 2018 Chevrolet Silverado
- Erratic throttle response
- Reduced engine power
- Hesitation or stalling during acceleration
- Activation of limp mode
- Check Engine Light illuminated
How to Fix P2138 2018 Chevrolet Silverado
- Diagnose the specific sensor causing the correlation error using a scan tool.
- Inspect the wiring harness and connectors for any damage or corrosion.
- Replace the faulty Accelerator Pedal Position Sensor 1 or Sensor 2.
- Clear the DTC and perform a throttle relearn procedure using a scan tool.
- Test drive the vehicle to ensure the issue has been resolved and the sensors are now correlating properly.
Cost to Fix P2138 2018 Chevrolet Silverado
The typical repair costs for addressing a P2138 code on a 2018 Chevrolet Silverado can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the price of a new sensor, any necessary wiring repairs, and the diagnostic time and labor for the repair process. It's important to note that actual repair costs can vary based on the location of the repair shop, the vehicle's make and model, and the hourly labor rates charged. It's recommended to obtain quotes from multiple shops to compare prices and ensure a fair cost for the repair.
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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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