OBD-II code · Chassis
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.
Is it safe to drive with C0044?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyEncoder ring contaminated with metal debris
- PossibleTone ring cracked
- Less likelyConnector with intermittent contact under vibration
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
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Wheel Speed Sensor Fr, Tone Ring, Hub Bearing
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.