P1544
Throttle Actuation Potentiometer Signal Too High
P1544 is an OBD-II diagnostic trouble code meaning: Throttle Actuation Potentiometer Signal Too High. Common causes: throttle potentiometer malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Check Engine light comes on
- The engine goes into emergency mode
- Reduced engine power
- Unstable idling
- Increased fuel consumption
Causes
- Throttle potentiometer malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Engine control unit (ECU) malfunction
- Mechanical problems with the throttle valve
How to Fix
- Check the resistance of the throttle potentiometer
- Inspect the wiring harness and connectors for damage.
- Check the voltage in the sensor circuit
- Clean the throttle valve and check its mechanical operation
- If necessary, replace the throttle potentiometer
Related codes
Error P1544 by Vehicle Brand
FAQ
What does the P1544 code mean?
P1544 is an OBD-II diagnostic trouble code that indicates: Throttle Actuation Potentiometer Signal Too High
What causes a P1544 error code?
The most common causes of P1544 include: Throttle potentiometer malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Engine control unit (ECU) malfunction.
How do I fix a P1544 diagnostic trouble code?
To fix P1544: Check the resistance of the throttle potentiometer. Inspect the wiring harness and connectors for damage.. Check the voltage in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1544?
Limited driving only, diagnose soon
How much does it cost to fix P1544?
The estimated repair cost for P1544 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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