P2128 2017 GMC Sierra Code - Accelerator Pedal Position Sensor 2 Circuit High Voltage
Quick Answer
The P2128 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is a high voltage condition detected in the circuit for Accelerator Pedal Position Sensor 2 (APP2). Common causes include Faulty Accelerator Pedal Position Sensor 2, Wiring or connector issues in the sensor circuit, ECM malfunction. 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
- P2128 2017 GMC Sierra indicates Accelerator Pedal Position Sensor 2 Circuit High Voltage.
- Common causes
- Common causes include Faulty Accelerator Pedal Position Sensor 2, Wiring or connector issues in the sensor circuit, ECM malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P2128 2017 GMC Sierra Description
The P2128 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is a high voltage condition detected in the circuit for Accelerator Pedal Position Sensor 2 (APP2). The accelerator pedal position sensor is a vital component of the vehicle's electronic throttle control system, which communicates the position of the accelerator pedal to the engine control module (ECM). This information is used by the ECM to determine the appropriate fuel delivery and ignition timing for optimal engine performance.
Common Causes of P2128 2017 GMC Sierra
- Faulty Accelerator Pedal Position Sensor 2
- Wiring or connector issues in the sensor circuit
- ECM malfunction
- Corrosion or damage to sensor components
- Electrical interference or short circuits
Symptoms of P2128 2017 GMC Sierra
- Reduced engine power
- Check Engine Light illuminated
- Difficulty accelerating
- Rough or erratic engine idle
- Stalling or hesitation during acceleration
How to Fix P2128 2017 GMC Sierra
- Use a diagnostic scanner to retrieve the trouble codes and confirm P2128.
- Inspect the wiring harness and connectors for any damage or corrosion.
- Test the Accelerator Pedal Position Sensor 2 for proper operation.
- Replace the sensor if faulty, ensuring proper installation and calibration.
- Clear the DTC and perform a test drive to verify the repair.
Cost to Fix P2128 2017 GMC Sierra
The cost of repairing a P2128 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing the Accelerator Pedal Position Sensor 2 can range from $100 to $300, including parts and labor. Additional costs may apply if there are wiring or ECM issues that need to be addressed. It's recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's specific needs. Labor rates at auto repair shops typically range from $80 to $150 per hour, but can vary based on location and other factors.
Need more information about the P2128 2017 GMC Sierra code?
Need more information on how to fix the P2128 2017 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2128 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2128 2017 GMC Sierra Code
No Frequently Asked Questions about P2128 2017 GMC Sierra Code found.
Discuss the causes and fixes for P2128 2017 GMC Sierra OBDII Code
Code P2128 2017 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.