OBD-II code · Chassis
C0512 Right Rear Wheel Speed Sensor A Circuit/Open
Open circuit on right-rear WSS A. 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 C0512?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWire broken or connector unplugged
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
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 Rr, Sensor Wiring
Related codes
- C0666Right Rear Wheel Speed Sensor B Circuit/Open
- C050FLeft Rear Wheel Speed Sensor A Circuit High
- C0510Hill Hold Function Disabled
- C0511Left Rear Wheel Speed Sensor A Correlation
- C0513Right Rear Wheel Speed Sensor A Range/Performance
- C0514Right Rear Wheel Speed Sensor A Circuit Low
- C0515Right Rear Wheel Speed Sensor A Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.