Adaptive Cruise Control Sensor Circuit Malfunction
The adaptive cruise control module has detected a fault in its forward-looking radar or lidar sensor circuit. ACC and forward collision warning are unavailable while the fault is active.
Affected components
- Acc radar sensor
- Acc module
- Sensor wiring
Common causes
- High likelihood: Radar sensor blocked by snow, ice or dirt
- Medium likelihood: Sensor misaligned after front-end impact
- Medium likelihood: Radar/lidar sensor failed
Possible symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.