The control module detected an interruption (open circuit) in the Right Rear Wheel Speed Sensor B circuit, so the expected electrical continuity was not present.
TuningBot DTC Database · v4.37.15
C0666 Right Rear Wheel Speed Sensor B Circuit/Open
Generic (OBD-II) interpretation in the TuningBot DTC database.
What C0666 means
Related and nearby codes
How to read C0666
Chassis: brakes, steering and suspension.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about C0666
What does C0666 mean?
Right Rear Wheel Speed Sensor B Circuit/Open. The control module detected an interruption (open circuit) in the Right Rear Wheel Speed Sensor B circuit, so the expected electrical continuity was not present.
Is C0666 generic or manufacturer-specific?
C0666 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove C0666 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether C0666 is removable in your case.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
