P0122 2015 GMC Sierra Code - Throttle Position Sensor 1 Circuit Low Voltage
Quick Answer
The P0122 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates an issue with the Throttle Position Sensor (TPS) 1 Circuit registering a low voltage. Common causes include Faulty Throttle Position Sensor (TPS), Wiring issues or a poor connection in the TPS circuit, Corrosion or damage to the TPS connector. 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
- P0122 2015 GMC Sierra indicates Throttle Position Sensor 1 Circuit Low Voltage.
- Common causes
- Common causes include Faulty Throttle Position Sensor (TPS), Wiring issues or a poor connection in the TPS circuit, Corrosion or damage to the TPS connector.
- 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 P0122 2015 GMC Sierra Description
The P0122 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates an issue with the Throttle Position Sensor (TPS) 1 Circuit registering a low voltage. The TPS is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to determine the appropriate fuel delivery and ignition timing for optimal engine performance.
Common Causes of P0122 2015 GMC Sierra
- Faulty Throttle Position Sensor (TPS).
- Wiring issues or a poor connection in the TPS circuit.
- Corrosion or damage to the TPS connector.
- ECM software or hardware issues affecting TPS communication.
- Environmental factors such as moisture or debris affecting TPS operation.
Symptoms of P0122 2015 GMC Sierra
- Poor acceleration or hesitation when pressing the throttle pedal.
- Rough idling or stalling when at a stop.
- Reduced fuel efficiency and increased emissions.
- Check Engine Light illuminated on the dashboard.
- Lack of response from the throttle pedal.
How to Fix P0122 2015 GMC Sierra
- Begin by diagnosing the TPS using a scan tool to confirm the P0122 code and check for any related codes.
- Inspect the TPS wiring and connector for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the TPS output voltage using a multimeter to ensure it is within the specified range. Replace the TPS if it is out of range.
- Clear the DTCs from the ECM memory and perform a test drive to verify that the issue has been resolved.
- If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or other related components.
Cost to Fix P0122 2015 GMC Sierra
The typical repair costs for addressing a P0122 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty Throttle Position Sensor (TPS) can range from $50 to $200, depending on the brand and quality of the part. Labor costs for this repair can range from $80 to $150 per hour, with the total repair time typically taking around 1-2 hours. Additional costs may apply if further diagnostics or repairs are necessary. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle.
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