C0080
Wheel Speed Mismatch (Front Axle)
Front axle wheel speeds differ beyond the plausibility threshold over time. Often caused by mismatched tyre rolling circumference or a partially failing sensor.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: easy
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
Ordered by how often each turns out to be the cause.
- Mixed tyre sizes or worn tyre on one sideCommon
- One sensor driftingPossible
Parts involved
- Wheel Speed Sensor Fl
- Wheel Speed Sensor Fr
- Tyres
C0080 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.