OBD-II code · Chassis
C050F Left Rear Wheel Speed Sensor A Circuit High
Left-rear WSS A signal voltage above 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 C050F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire open or short to power
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
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 Lr, Sensor Wiring
Related codes
- C0662Left Rear Wheel Speed Sensor B Circuit High
- C050CLeft Rear Wheel Speed Sensor A Circuit/Open
- C050DLeft Rear Wheel Speed Sensor A Range/Performance
- C050ELeft Rear Wheel Speed Sensor A Circuit Low
- C0510Hill Hold Function Disabled
- C0511Left Rear Wheel Speed Sensor A Correlation
- C0512Right Rear Wheel Speed Sensor A Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.