C0547
Vacuum Sensor Supply Voltage Circuit/Open
C0547 is an OBD-II diagnostic trouble code meaning: Vacuum Sensor Supply Voltage Circuit/Open. Common causes: broken or damaged wiring harness, poor contact in the sensor connector. Estimated repair cost: $56–167.
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Check Engine Light Illuminates
- Reduced engine power
Causes
- Broken or damaged wiring harness
- Poor contact in the sensor connector
- Vacuum sensor malfunction
- Problems with power from the ECU
How to Fix
- Check the integrity of the vacuum sensor wiring harness
- Check the contacts in the sensor and ECU connector
- Measure the voltage at the sensor (should be 5V)
- Replace the vacuum sensor if necessary
- Clear error memory and check if error is returned
Related codes
Error C0547 by Vehicle Brand
FAQ
What does the C0547 code mean?
C0547 is an OBD-II diagnostic trouble code that indicates: Vacuum Sensor Supply Voltage Circuit/Open
What causes a C0547 error code?
The most common causes of C0547 include: Broken or damaged wiring harness; Poor contact in the sensor connector; Vacuum sensor malfunction; Problems with power from the ECU.
How do I fix a C0547 diagnostic trouble code?
To fix C0547: Check the integrity of the vacuum sensor wiring harness. Check the contacts in the sensor and ECU connector. Measure the voltage at the sensor (should be 5V). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0547?
Limited driving only, diagnose soon
How much does it cost to fix C0547?
The estimated repair cost for C0547 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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