OBD-II code · Chassis
C0237 Loss of Speed Sensor Signal Front Left
The ABS control module has lost the wheel speed signal from the front left wheel during driving. ABS and stability control are disabled because wheel-individual speed information is required for slip detection.
Is it safe to drive with C0237?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWheel speed sensor failed
- PossibleWiring break at wheel arch
- Less likelyTone ring damaged
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, Tone Ring, ABS Control Module, Sensor Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.