P1122 GMC Code - Throttle Position Sensor Circuit Intermittent Low Voltage
Quick Answer
The P1122 GMC diagnostic trouble code indicates a problem with the throttle position sensor circuit having intermittent low voltage. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning ECM. 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
- P1122 GMC indicates Throttle Position Sensor Circuit Intermittent Low Voltage.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, Malfunctioning ECM.
- 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 P1122 GMC Description
The P1122 GMC diagnostic trouble code indicates a problem with the throttle position sensor circuit having intermittent low voltage. The throttle position sensor (TPS) is a crucial component that monitors the position of the throttle valve in the engine. It provides feedback to the engine control module (ECM) to adjust the air-fuel mixture and ignition timing for optimal engine performance. When the TPS circuit has low voltage intermittently, it can lead to a variety of issues with engine performance and drivability.
Common Causes of P1122 GMC
- Faulty throttle position sensor
- Damaged wiring or connectors in the TPS circuit
- Malfunctioning ECM
- Throttle body issues
- Poor electrical connections
Symptoms of P1122 GMC
- Poor acceleration or lack of power
- Rough idling or stalling
- Engine misfires
- Hesitation or lack of response when pressing the gas pedal
- Vehicle going into limp mode
How to Fix P1122 GMC
- Diagnose the TPS circuit using a diagnostic scanner to confirm the issue.
- Inspect the throttle position sensor, wiring, and connectors for any visible damage or corrosion.
- Test the TPS for proper voltage and resistance values.
- Replace the throttle position sensor if it is found to be faulty.
- Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1122 GMC
The typical repair costs for addressing a P1122 GMC code can range from $100 to $300, depending on the specific cause of the issue and the cost of parts. This estimate includes the cost of a new throttle position sensor, diagnostic time, and labor for the repair. However, actual costs can vary based on factors such as location, vehicle make and model, and labor rates at auto repair shops. It is advisable to obtain quotes from multiple shops to ensure a competitive price for the repair.
When is the Code Detected?
Need more information about the P1122 GMC code?
Need more information on how to fix the P1122 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1122 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1122 GMC Code
No Frequently Asked Questions about P1122 GMC Code found.
Discuss the causes and fixes for P1122 GMC OBDII Code
Code P1122 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.