C0278
Open or Short Circuit in ABS Solenoid Relay Circuit
C0278 is an OBD-II diagnostic trouble code meaning: Open or Short Circuit in ABS Solenoid Relay Circuit. Common causes: broken wires in the abs solenoid relay circuit, short circuit in the circuit. Estimated repair cost: $56–167.
Symptoms
- ABS light is on
- Disabling the ABS system
- Unstable operation of the brake system
Causes
- Broken wires in the ABS solenoid relay circuit
- Short circuit in the circuit
- Faulty ABS solenoid relay
- Wiring Harness Problems
How to Fix
- Check the integrity of the wires in the ABS solenoid relay circuit
- Check the ABS solenoid relay for malfunctions.
- Replace damaged wires or relays
- Check wiring harness for damage
Related codes
Error C0278 by Vehicle Brand
FAQ
What does the C0278 code mean?
C0278 is an OBD-II diagnostic trouble code that indicates: Open or Short Circuit in ABS Solenoid Relay Circuit
What causes a C0278 error code?
The most common causes of C0278 include: Broken wires in the ABS solenoid relay circuit; Short circuit in the circuit; Faulty ABS solenoid relay; Wiring Harness Problems.
How do I fix a C0278 diagnostic trouble code?
To fix C0278: Check the integrity of the wires in the ABS solenoid relay circuit. Check the ABS solenoid relay for malfunctions.. Replace damaged wires or relays. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0278?
Do not drive — repair immediately
How much does it cost to fix C0278?
The estimated repair cost for C0278 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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