What does code C066A mean?

Q: What does code C066A mean?

Right Rear Wheel Speed Sensor B Intermittent/Erratic. C066A indicates that the anti-lock brake system (ABS) module has detected an intermittent or erratic signal from the right rear wheel speed sensor B circuit. The computer sets this code when the signal from that sensor drops out, jumps, or becomes inconsistent during driving, often without a permanent hard failure.

DTC codes / C06xx · Brakes, steering and suspension / C066A

C066ARight Rear Wheel Speed Sensor B Intermittent/Erratic

C066A indicates that the anti-lock brake system (ABS) module has detected an intermittent or erratic signal from the right rear wheel speed sensor B circuit. The computer sets this code when the signal from that sensor drops out, jumps, or becomes inconsistent during driving, often without a permanent hard failure.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.