OBD-II code · Powertrain (generic)
P0C57 Drive Motor B Position Sensor Circuit A Circuit Low
The position sensor channel A of drive motor B reports a circuit low fault. Phase commutation feedback impaired on this channel.
Is it safe to drive with P0C57?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor B Position Sensor A, Wiring Harness, Hybrid Control Module
Related codes
- P0C52Drive Motor A Position Sensor Circuit A Circuit Low
- P0C5CDrive Motor A Position Sensor Circuit B Circuit Low
- P0C61Drive Motor B Position Sensor Circuit B Circuit Low
- P0CDCDrive Motor A Position Sensor Circuit C Circuit Low
- P0C54Drive Motor A Position Sensor Circuit A Circuit Intermittent/Erratic
- P0C55Drive Motor B Position Sensor Circuit A Circuit
- P0C56Drive Motor B Position Sensor Circuit A Range/Performance
- P0C58Drive Motor B Position Sensor Circuit A Circuit High
- P0C59Drive Motor B Position Sensor Circuit A Circuit Intermittent/Erratic
- P0C5ADrive Motor A Position Sensor Circuit B Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.