C0669: Right Rear Wheel Speed Sensor B Circuit High
Standardized SAE J2012 code · C06xx codes
Safety-critical system. Faults in airbags, brakes, steering or high-voltage components can put people at risk. Follow the manufacturer's service information and safety procedures, or have the vehicle checked by a qualified workshop.
What does C0669 mean?
Right Rear Wheel Speed Sensor B Circuit High: the signal voltage is above the expected range. Wheel-speed signals feed ABS, ESC, traction control and the speedometer.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
- High Signal wire shorted to battery
- Low Connector pins corroded - high contact resistance
- Low Supply wire pinched against B+ source
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of C0669 on the same make and model first.
C0669 in the community
Ask about C0669No one has posted about C0669 yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your C0669 problem