DTC code
C0078
Tire Diameter
Technical guide
reference — not individually verifiedSymptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Probable causes
high: Wrong tire size or mismatch
Diagnostic steps
Check the components involved: tires. Verify wiring and connectors before replacing any part. Job difficulty: easy. Typical European range — 0-800 EUR, 0.5-2 h. Reference values only.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.
0 confirmed cases on C0078
Nothing confirmed yet for this code. No guess is offered on purpose.
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