P1122 Code - Throttle Position Sensor Circuit Intermittent Low Voltage
Quick Answer
The P1122 diagnostic trouble code indicates that there is an intermittent low voltage condition in the throttle position sensor (TPS) circuit. Common causes include Faulty wiring or connections in the TPS circuit, Defective TPS sensor, 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 indicates Throttle Position Sensor Circuit Intermittent Low Voltage.
- Common causes
- Common causes include Faulty wiring or connections in the TPS circuit, Defective TPS sensor, 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.
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Code P1122 Description
The P1122 diagnostic trouble code indicates that there is an intermittent low voltage condition in the throttle position sensor (TPS) circuit. The TPS is a crucial component that monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing, ensuring optimal engine performance.
Common Causes of P1122
- Faulty wiring or connections in the TPS circuit
- Defective TPS sensor
- Malfunctioning ECM
- Issues with the throttle body
- Corrosion or damage to electrical components
Symptoms of P1122
- Erratic throttle response
- Rough idling or stalling
- Poor fuel efficiency
- Check Engine Light illuminated
- Loss of power or acceleration
How to Fix P1122
- Begin by conducting a thorough inspection of the TPS wiring and connections for any signs of damage or corrosion.
- Test the TPS sensor using a multimeter to check for proper voltage output at various throttle positions.
- If the TPS sensor is found to be faulty, replace it with a new, OEM-quality sensor.
- Check and reset the ECM to ensure it is functioning correctly and receiving accurate TPS data.
- Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1122
The cost of repairing a P1122 code can vary depending on the specific cause of the issue and the vehicle's make and model. Typically, the parts required for this repair, such as a new TPS sensor, can range from $50 to $150. Labor costs may add another $100 to $200, depending on the shop's hourly rates and the complexity of the repair. Overall, a rough estimate for addressing a P1122 code could fall within the range of $150 to $350. It's advisable to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
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Code P1122 Information for Specific Makes
- P1122 Acura — Throttle Position Sensor Signal Higher Than Expected
- P1122 BMW — Pedal Position 1 Low Input
- P1122 Buick — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Cadillac — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Chevrolet — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Dodge — IAT Sens Circ Interm High Voltage
- P1122 Ford — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 GMC — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Honda — Throttle Position Sensor Signal Higher Than Expected
- P1122 Hyundai — Boost Pressure Control Valve
- P1122 Infiniti — Electric Throttle Control Performance Problem
- P1122 Isuzu — Throttle Position Sensor Circuit Higher Than Expected
- P1122 Land Rover — Accelerator Pedal Position Sensor Short Circuit To Ground
- P1122 Lexus — Coolant Flow Control Valve Position Sensor Circuit Low
- P1122 Mazda — Throttle Position Sensor Stuck Closed Lower Than Expected
- P1122 MINI — Pedal Position 1 Low Input
- P1122 Nissan — Electric Throttle Control Performance Problem
- P1122 Pontiac — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Saturn — Throttle Position Sensor Circuit Intermittent Low Voltage
- P1122 Subaru — Pressure Sources Switching Valve Circuit High Input
- P1122 Toyota — Coolant Flow Control Valve Position Sensor Circuit Low
- P1122 Volkswagen — Coolant Flow Control Valve Position Sensor Circuit Low
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