OBD-II code · Chassis
C0508 Right Front Wheel Speed Sensor A Circuit Low
Right-front WSS A signal voltage below expected range. 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 C0508?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
- Less likelyHarness chafing through insulation
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 h
- Emissions test
- Usually unaffected
- Parts involved
- Wss Rf, Sensor Wiring
Related codes
- C065ARight Front Wheel Speed Sensor B Circuit Low
- C0505ESC Switch Circuit
- C0506Right Front Wheel Speed Sensor A Circuit/Open
- C0507Right Front Wheel Speed Sensor A Range/Performance
- C0509Right Front Wheel Speed Sensor A Circuit High
- C050ARight Front Wheel Speed Sensor A Intermittent/Erratic
- C050BRight Front Wheel Speed Sensor A Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.