C05A4
Wheel Speed Sensors Supply Circuit Low
C05A4 is an OBD-II diagnostic trouble code meaning: Wheel Speed Sensors Supply Circuit Low. Common causes: damaged wiring harness to speed sensors, short circuit in the sensor power supply circuit. Estimated repair cost: $33–167.
Symptoms
- ABS/ESP indicator is on
- Incorrect operation of the ABS/ESP system
- Loss of wheel speed data on the dashboard
Causes
- Damaged wiring harness to speed sensors
- Short circuit in the sensor power supply circuit
- ABS/ESP module malfunction
- Poor contact in sensor connectors
- Malfunction of the wheel speed sensors themselves
How to Fix
- Check the integrity of the wiring harness to the speed sensors
- Check the voltage in the sensor power supply circuit
- Check sensor connectors and contacts
- Check the serviceability of the wheel speed sensors
- Check the ABS/ESP module for faults
Related codes
Error C05A4 by Vehicle Brand
FAQ
What does the C05A4 code mean?
C05A4 is an OBD-II diagnostic trouble code that indicates: Wheel Speed Sensors Supply Circuit Low
What causes a C05A4 error code?
The most common causes of C05A4 include: Damaged wiring harness to speed sensors; Short circuit in the sensor power supply circuit; ABS/ESP module malfunction; Poor contact in sensor connectors.
How do I fix a C05A4 diagnostic trouble code?
To fix C05A4: Check the integrity of the wiring harness to the speed sensors. Check the voltage in the sensor power supply circuit. Check sensor connectors and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C05A4?
Limited driving only, diagnose soon
How much does it cost to fix C05A4?
The estimated repair cost for C05A4 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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