C0120high severityChassis
Electronic Parking Brake Motor Circuit
on 2015 Dodge Challenger 3.6L V6 Pentastar · RWD
What this code means
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.
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