OBD-II code · Powertrain (generic)
P0A1C Drive Motor A Phase U Current Sensor Circuit
The motor controller detects an electrical fault on the phase U current sensor of drive motor A. Phase current sensing is required for vector control of the synchronous machine.
Is it safe to drive with P0A1C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCurrent sensor failed
- PossibleInverter internal fault
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Shop_only
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor A, Phase Current Sensor, Inverter
Related codes
- P0BE5Drive Motor A Phase U Current Sensor Circuit
- P0BE9Drive Motor A Phase V Current Sensor Circuit
- P0BEDDrive Motor A Phase W Current Sensor Circuit
- P0BF1Drive Motor B Phase U Current Sensor Circuit
- P0BF5Drive Motor B Phase V Current Sensor Circuit
- P0BF9Drive Motor B Phase W Current Sensor Circuit
- P2E1BDrive Motor A Phase X Current Sensor Circuit
- P2E1FDrive Motor A Phase Y Current Sensor Circuit
- P2E23Drive Motor A Phase Z Current Sensor Circuit
- P0A19Motor Torque Sensor Circuit Low
- P0A1AGenerator Control Module
- P0A1BDrive Motor A Control Module Performance
- P0A1DHybrid/EV Powertrain Control Module A
- P0A1EStarter/Generator Control Module
- P0A1FBattery Energy Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.