OBD-II code · Chassis
C0245 Wheel Speed Sensor Frequency Mismatch
The ABS control module has detected that the frequency of one wheel speed sensor signal does not match the others under stable driving conditions. This often indicates a tone ring with extra or missing teeth or a sensor with degraded signal quality.
Is it safe to drive with C0245?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyTone ring damaged or contaminated
- PossibleWheel speed sensor degraded
- Less likelyTyre size mismatch
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Wheel Speed Sensor, Tone Ring, ABS Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.