Brake Pump Motor Circuit
The ABS or brake control module has detected an electrical fault in the brake pump motor circuit. The pump is used to build brake pressure during ABS, ESP and brake-by-wire operations and a fault disables these functions.
Affected components
- Brake pump motor
- Abs control module
- Power supply wiring
Common causes
- High likelihood: Brake pump motor failed
- Medium likelihood: Pump motor relay failed
- Low likelihood: Power supply wiring fault
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.