P0122 Buick Code - Throttle Position Sensor 1 Circuit Low Voltage
Quick Answer
The P0122 Buick code indicates that the Throttle Position Sensor 1 is registering a low voltage signal. Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the 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
- P0122 Buick indicates Throttle Position Sensor 1 Circuit Low Voltage.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors in the TPS circuit, Issues with the 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.
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Code P0122 Buick Description
The P0122 Buick code indicates that the Throttle Position Sensor 1 is registering a low voltage signal. The throttle position sensor (TPS) is a crucial component that communicates the position of the throttle to the engine control module (ECM), allowing the ECM to adjust fuel delivery and ignition timing accordingly. A low voltage signal from the TPS can lead to incorrect fuel and ignition adjustments, resulting in poor engine performance, reduced fuel efficiency, and potential drivability issues. If left unaddressed, this issue can lead to further damage to the engine and other related systems.
Common Causes of P0122 Buick
- Faulty throttle position sensor
- Damaged or corroded wiring/connectors in the TPS circuit
- Issues with the ECM
- Vacuum leaks in the intake system
- Throttle body issues
Symptoms of P0122 Buick
- Engine hesitations or stalling
- Poor acceleration
- Rough idling
- Reduced fuel efficiency
- Illumination of the Check Engine Light
How to Fix P0122 Buick
- Begin by diagnosing the issue using a scan tool to confirm the P0122 code.
- Inspect the throttle position sensor and its wiring for any visible damage or corrosion.
- Test the TPS using a multimeter to check for proper voltage output.
- Replace the throttle position sensor if it is faulty or shows irregular readings.
- Clear the code and perform a test drive to ensure the issue has been resolved.
Cost to Fix P0122 Buick
The cost of repairing a Throttle Position Sensor 1 Circuit Low Voltage issue can vary depending on the specific vehicle make and model. Typically, the cost of replacing a throttle position sensor ranges from $50 to $200, while the labor cost can be around $80 to $150 per hour. Additionally, diagnostic time and any additional parts or repairs needed can increase the total cost. It is recommended to consult with a mechanic or auto repair shop for a more accurate cost estimate based on your vehicle's requirements.
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