P1123
Throttle Position Sensor Circuit Intermittent High Voltage
P1123 is an OBD-II diagnostic trouble code meaning: Throttle Position Sensor Circuit Intermittent High Voltage. Common causes: throttle position sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Dips during acceleration
- Increased fuel consumption
- Check Engine Light Is On
- Reduced engine power
Causes
- Throttle Position Sensor Malfunction
- Open or short circuit in the sensor circuit
- Oxidation of contacts in connectors
- Circuit Grounding Problems
- Malfunction of the engine control unit (rare)
How to Fix
- Check the condition of the sensor connectors and wiring
- Clean contacts from oxides
- Check the sensor resistance (compare with standards)
- Replace the throttle position sensor if necessary
- Check and restore the integrity of the power circuit and signal wire
Related codes
Error P1123 by Vehicle Brand
FAQ
What does the P1123 code mean?
P1123 is an OBD-II diagnostic trouble code that indicates: Throttle Position Sensor Circuit Intermittent High Voltage
What causes a P1123 error code?
The most common causes of P1123 include: Throttle Position Sensor Malfunction; Open or short circuit in the sensor circuit; Oxidation of contacts in connectors; Circuit Grounding Problems.
How do I fix a P1123 diagnostic trouble code?
To fix P1123: Check the condition of the sensor connectors and wiring. Clean contacts from oxides. Check the sensor resistance (compare with standards). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1123?
Limited driving only, diagnose soon
How much does it cost to fix P1123?
The estimated repair cost for P1123 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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