Chassis
generic / SAE
C0044
Right Front Wheel Speed Sensor Signal Erratic
Erratic pulses on the right front wheel speed sensor at speed. Wheel-speed signals feed ABS, ESC, traction control, transmission and odometer — a single dropped signal disables all of these safety functions until repaired.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number– / 44
Possible causes
- Encoder ring contaminated with metal debris high
- Tone ring cracked medium
- Connector with intermittent contact under vibration 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: 80–450 €
- Estimated time: 0.5–2.5 h
- Component: wheel speed sensor fr
- Component: tone ring
- Component: hub bearing
Sources
References
sae:J2012