C0120
Electronic Parking Brake Motor Circuit
2012-2018 BMW 328i 2.0L Turbo I4
High SeverityChassisGeneric (SAE)
Description
Malfunction in the electronic parking brake actuator motor circuit.
Symptoms
- Parking brake warning light
- EPB will not apply or release
- Audible grinding from rear brakes
- Hill-hold assist inoperative
Common Causes
- EPB motor failure
- Wiring to EPB motor damaged
- EPB module failure
- Motor connector corroded
Diagnostic Steps
- Test EPB motor by commanding apply/release with scan tool
- Check motor connector for corrosion
- Test motor winding resistance
- Inspect wiring harness
- Check EPB module outputs
Repair Notes
Replace EPB motor/caliper assembly. EPB systems typically require scan tool for service mode before pad replacement.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0120 on Other Vehicles
Common Questions
What does code C0120 mean on a 2012-2018 BMW 328i?
C0120 stands for "Electronic Parking Brake Motor Circuit". Malfunction in the electronic parking brake actuator motor circuit.
What are the symptoms of C0120 on a BMW 328i?
Common symptoms of C0120 include: Parking brake warning light, EPB will not apply or release, Audible grinding from rear brakes, Hill-hold assist inoperative.
What causes C0120 on a 2012-2018 BMW 328i?
Common causes of C0120 include: EPB motor failure, Wiring to EPB motor damaged, EPB module failure, Motor connector corroded.