P1231
Throttle Position Sensor 1 and 2 Circuit
P1231 is an OBD-II diagnostic trouble code meaning: Throttle Position Sensor 1 and 2 Circuit. Common causes: throttle position sensor malfunction, open or short circuit in wiring. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Loss of engine power
- Jerks during acceleration
- Check Engine light comes on
- Increased fuel consumption
Causes
- Throttle Position Sensor Malfunction
- Open or short circuit in wiring
- Poor contact in sensor connectors
- Engine control unit malfunction
- Mechanical throttle problems
How to Fix
- Check the condition of the throttle position sensors
- Inspect the wiring harness and connectors for damage.
- Check the resistance and output voltage of the sensors
- Clean the throttle valve and check its mechanical operation
- If necessary, replace faulty sensors
Related codes
Error P1231 by Vehicle Brand
FAQ
What does the P1231 code mean?
P1231 is an OBD-II diagnostic trouble code that indicates: Throttle Position Sensor 1 and 2 Circuit
What causes a P1231 error code?
The most common causes of P1231 include: Throttle Position Sensor Malfunction; Open or short circuit in wiring; Poor contact in sensor connectors; Engine control unit malfunction.
How do I fix a P1231 diagnostic trouble code?
To fix P1231: Check the condition of the throttle position sensors. Inspect the wiring harness and connectors for damage.. Check the resistance and output voltage of the sensors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1231?
Limited driving only, diagnose soon
How much does it cost to fix P1231?
The estimated repair cost for P1231 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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