C0078
Tire Diameter
C0078 is an OBD-II diagnostic trouble code meaning: Tire Diameter. Common causes: installing the wrong size wheels, wheel speed sensor malfunction. Estimated repair cost: $33–111.
Symptoms
- ABS/ESP indicator is on
- Reduced ABS performance
- False alarms of the stabilization system
Causes
- Installing the wrong size wheels
- Wheel speed sensor malfunction
- Wiring Harness Problems
- ABS/ESP unit programming error
How to Fix
- Check that the wheel diameter corresponds to the standard
- Diagnose wheel speed sensors
- Check the integrity of the wiring harness
- Reprogram the ABS/ESP unit
Related codes
Error C0078 by Vehicle Brand
FAQ
What does the C0078 code mean?
C0078 is an OBD-II diagnostic trouble code that indicates: Tire Diameter
What causes a C0078 error code?
The most common causes of C0078 include: Installing the wrong size wheels; Wheel speed sensor malfunction; Wiring Harness Problems; ABS/ESP unit programming error.
How do I fix a C0078 diagnostic trouble code?
To fix C0078: Check that the wheel diameter corresponds to the standard. Diagnose wheel speed sensors. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0078?
Do not drive — repair immediately
How much does it cost to fix C0078?
The estimated repair cost for C0078 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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