P2120 GMC Code - Accelerator Pedal Position Sensor 1 Circuit
Quick Answer
The P2120 GMC code refers to an issue with the Accelerator Pedal Position Sensor 1 Circuit. Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor 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
- P2120 GMC indicates Accelerator Pedal Position Sensor 1 Circuit.
- Common causes
- Common causes include Faulty accelerator pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor 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.
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 P2120 GMC Description
The P2120 GMC code refers to an issue with the Accelerator Pedal Position Sensor 1 Circuit. This sensor is responsible for monitoring the position of the accelerator pedal and sending this information to the engine control module (ECM) to adjust the throttle accordingly. When this sensor circuit malfunctions, it can lead to a variety of performance issues in the vehicle.
Common Causes of P2120 GMC
- Faulty accelerator pedal position sensor.
- Damaged wiring or connectors in the sensor circuit.
- Corrosion or contamination in the sensor connections.
- Issues with the ECM or other related components.
- Electrical issues such as short circuits or open circuits.
Symptoms of P2120 GMC
- Check engine light is illuminated on the dashboard.
- Loss of power or hesitation during acceleration.
- Engine stalling or rough idling.
- Inability to maintain a constant speed.
- Reduced fuel efficiency.
How to Fix P2120 GMC
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the fault codes and pinpoint the source of the problem.
- Inspect the accelerator pedal position sensor and its wiring for any signs of damage, corrosion, or loose connections. Replace any faulty components as needed.
- Clear the fault codes from the ECM memory and reset the system to see if the issue persists.
- Test drive the vehicle to ensure that the accelerator pedal position sensor is functioning correctly and that the symptoms have been resolved.
- If the problem persists, further troubleshooting may be required to identify any underlying issues with the sensor circuit or related components.
Cost to Fix P2120 GMC
The typical cost to repair an issue with the Accelerator Pedal Position Sensor 1 Circuit can range from $150 to $500, including parts and labor. However, prices can vary significantly depending on the make and model of the vehicle, the location of the repair shop, and the extent of the damage. Diagnostic time and labor rates can also impact the overall cost, with rates typically ranging from $80 to $150 per hour. It is recommended to obtain quotes from multiple auto repair shops to compare prices and ensure a fair estimate.
Need more information about the P2120 GMC code?
Need more information on how to fix the P2120 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2120 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2120 GMC Code
No Frequently Asked Questions about P2120 GMC Code found.
Discuss the causes and fixes for P2120 GMC OBDII Code
Code P2120 GMC 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.