Park Brake Actuator Position Signal Malfunction
The EPB module has detected an out-of-range position signal from a caliper actuator. The module cannot determine whether the brake is fully applied or released.
Affected components
- Epb actuator
- Epb module
- Actuator wiring
Common causes
- High likelihood: Actuator position sensor failed
- Medium likelihood: Actuator mechanically jammed (corrosion)
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.