C054C
Vacuum Sensor A Circuit High
C054C is an OBD-II diagnostic trouble code meaning: Vacuum Sensor A Circuit High. Common causes: vacuum sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation at idle
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced engine power
Causes
- Vacuum sensor malfunction
- Open or short circuit in wiring harness
- Problems with connecting the sensor (oxidation of contacts)
- ECU malfunction
How to Fix
- Check the integrity of the vacuum sensor wiring harness
- Check the sensor connection and the condition of the contacts
- Replace the vacuum sensor if necessary
- Check the operation of the ECU (if other reasons are excluded)
Related codes
Error C054C by Vehicle Brand
FAQ
What does the C054C code mean?
C054C is an OBD-II diagnostic trouble code that indicates: Vacuum Sensor A Circuit High
What causes a C054C error code?
The most common causes of C054C include: Vacuum sensor malfunction; Open or short circuit in wiring harness; Problems with connecting the sensor (oxidation of contacts); ECU malfunction.
How do I fix a C054C diagnostic trouble code?
To fix C054C: Check the integrity of the vacuum sensor wiring harness. Check the sensor connection and the condition of the contacts. Replace the vacuum sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C054C?
Limited driving only, diagnose soon
How much does it cost to fix C054C?
The estimated repair cost for C054C is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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