OBD-II code · Chassis
C0665 Left Rear Wheel Speed Sensor B Incorrect Component Installed
Left Rear Wheel Speed Sensor B Incorrect Component Installed: the installed component does not match the type the vehicle expects. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
Is it safe to drive with C0665?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWrong replacement part
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Lr Wss B
Related codes
- C0557Left Rear Wheel Speed Sensor A Incorrect Component Installed
- C0662Left Rear Wheel Speed Sensor B Circuit High
- C0663Left Rear Wheel Speed Sensor B Intermittent/Erratic
- C0664Left Rear Wheel Speed Sensor B Correlation
- C0666Right Rear Wheel Speed Sensor B Circuit/Open
- C0667Right Rear Wheel Speed Sensor B Range/Performance
- C0668Right Rear Wheel Speed Sensor B Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.