OBD-II code · Chassis
C0511 Left Rear Wheel Speed Sensor A Correlation
Left-rear WSS A correlation fault with other wheel speed sensors. 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 C0511?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor or tone ring drifted
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
- 0.5–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Wss Lr
Related codes
- C0664Left Rear Wheel Speed Sensor B Correlation
- C050ELeft Rear Wheel Speed Sensor A Circuit Low
- C050FLeft Rear Wheel Speed Sensor A Circuit High
- C0510Hill Hold Function Disabled
- C0512Right Rear Wheel Speed Sensor A Circuit/Open
- C0513Right Rear Wheel Speed Sensor A Range/Performance
- C0514Right Rear Wheel Speed Sensor A Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.