OBD-II code · Powertrain (generic)
P0A57 Drive Motor B Current Sensor Circuit Low
The current sensor of the drive motor B reports a circuit low fault. Current measurement is unreliable.
Is it safe to drive with P0A57?
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
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor B Current Sensor, Wiring Harness, Hybrid Control Module
Related codes
- P0A53Drive Motor A Current Sensor Circuit Low
- P0A54Drive Motor A Current Sensor Circuit High
- P0A55Drive Motor B Current Sensor Circuit
- P0A56Drive Motor B Current Sensor Circuit Range/Performance
- P0A58Drive Motor B Current Sensor Circuit High
- P0A59Generator Current Sensor Circuit
- P0A5AGenerator Current Sensor Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.