Chassis
generic / SAE
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.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number2 / 45
Possible causes
- Tone ring damaged or contaminated high
- Wheel speed sensor degraded medium
- Tyre size mismatch low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–500 €
- Estimated time: 0.5–3 h
- Component: wheel speed sensor
- Component: tone ring
- Component: abs control module
Sources
References
sae:J2012