C0548
Vacuum Sensor Supply Voltage Low
C0548 is an OBD-II diagnostic trouble code meaning: Vacuum Sensor Supply Voltage Low. Common causes: vacuum sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Unstable idle
- Reduced engine power
- Check Engine Light Illuminates
Causes
- Vacuum sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- Engine control unit (ECU) malfunction
How to Fix
- Check voltage at vacuum sensor
- Inspect the wiring harness and connectors for damage.
- Replace the vacuum sensor if necessary
- Check ECU operation
Related codes
Error C0548 by Vehicle Brand
FAQ
What does the C0548 code mean?
C0548 is an OBD-II diagnostic trouble code that indicates: Vacuum Sensor Supply Voltage Low
What causes a C0548 error code?
The most common causes of C0548 include: Vacuum sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Engine control unit (ECU) malfunction.
How do I fix a C0548 diagnostic trouble code?
To fix C0548: Check voltage at vacuum sensor. Inspect the wiring harness and connectors for damage.. Replace the vacuum sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0548?
Limited driving only, diagnose soon
How much does it cost to fix C0548?
The estimated repair cost for C0548 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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