OBD-II code · Chassis
C0664 Left Rear Wheel Speed Sensor B Correlation
Left Rear Wheel Speed Sensor B Correlation: the value does not correlate with the related sensor or expected pattern. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
Is it safe to drive with C0664?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor or tone ring fault
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
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Lr Wss B, Lr Wss
Related codes
- C0511Left Rear Wheel Speed Sensor A Correlation
- C0661Left Rear Wheel Speed Sensor B Circuit Low
- C0662Left Rear Wheel Speed Sensor B Circuit High
- C0663Left Rear Wheel Speed Sensor B Intermittent/Erratic
- C0665Left Rear Wheel Speed Sensor B Incorrect Component Installed
- C0666Right Rear Wheel Speed Sensor B Circuit/Open
- C0667Right Rear Wheel Speed Sensor B Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.