P1122 Chevrolet Code - Throttle Position Sensor Circuit Intermittent Low Voltage
Quick Answer
The P1122 code for Chevrolet vehicles indicates an issue with the Throttle Position Sensor (TPS) circuit having intermittent low voltage. Common causes include Faulty Throttle Position Sensor (TPS), Damaged wiring or connectors in the TPS circuit, Corroded or dirty TPS sensor. 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 Chevrolet indicates Throttle Position Sensor Circuit Intermittent Low Voltage.
- Common causes
- Common causes include Faulty Throttle Position Sensor (TPS), Damaged wiring or connectors in the TPS circuit, Corroded or dirty TPS sensor.
- 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 P1122 Chevrolet Description
The P1122 code for Chevrolet vehicles indicates an issue with the Throttle Position Sensor (TPS) circuit having intermittent low voltage. The TPS is a crucial component of the engine management system as it monitors the position of the throttle, informing the engine control unit (ECU) about the driver's throttle input. The voltage signal from the TPS helps the ECU adjust the air-fuel mixture and ignition timing for optimal engine performance.
Common Causes of P1122 Chevrolet
- Faulty Throttle Position Sensor (TPS)
- Damaged wiring or connectors in the TPS circuit
- Corroded or dirty TPS sensor
- Issues with the ECU or other related components
- Environmental factors such as moisture or debris affecting the TPS
Symptoms of P1122 Chevrolet
- Rough idling or unstable engine speed
- Hesitation or lack of response when accelerating
- Reduced fuel efficiency
- Engine stalling or difficulty starting
- Check Engine Light illuminated on the dashboard
How to Fix P1122 Chevrolet
- Perform a thorough inspection of the TPS sensor, wiring, and connectors for any visible damage or corrosion.
- Use a multimeter to test the voltage output of the TPS sensor and ensure it is within the manufacturer's specified range.
- If the TPS sensor is faulty, replace it with a new one following the manufacturer's guidelines.
- Clear the diagnostic trouble codes from the ECU and reset the system to ensure the issue is resolved.
- Test drive the vehicle to confirm that the symptoms associated with the P1122 code have been eliminated.
Cost to Fix P1122 Chevrolet
The cost of repairing a P1122 code on a Chevrolet vehicle can vary depending on the specific model, year, and the extent of the issue. In general, replacing a faulty Throttle Position Sensor can cost between $50 to $200, including parts and labor. Additional costs may apply if there are other related components that need to be replaced or if diagnostic testing is required. It's recommended to consult with a certified mechanic or auto repair shop to get an accurate estimate based on your vehicle's circumstances. Keep in mind that labor rates and part prices can fluctuate, so it's essential to compare quotes from different sources to ensure a fair price.
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