OBD-II code · Powertrain (generic)
P0BF9 Drive Motor B Phase W Current Sensor Circuit
The current sensor for drive motor B phase W reports a circuit fault. Phase current measurement is unreliable.
Is it safe to drive with P0BF9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCurrent sensor failed
- PossibleWiring fault
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 Phase W Current Sensor, Wiring Harness, Hybrid Control Module
Related codes
- P0A1CDrive Motor A Phase U Current Sensor Circuit
- 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
- P2E1BDrive Motor A Phase X Current Sensor Circuit
- P2E1FDrive Motor A Phase Y Current Sensor Circuit
- P2E23Drive Motor A Phase Z Current Sensor Circuit
- P0BF6Drive Motor B Phase V Current Sensor Circuit Range/Performance
- P0BF7Drive Motor B Phase V Current Sensor Circuit Low
- P0BF8Drive Motor B Phase V Current Sensor Circuit High
- P0BFADrive Motor B Phase W Current Sensor Circuit Range/Performance
- P0BFBDrive Motor B Phase W Current Sensor Circuit Low
- P0BFCDrive Motor B Phase W Current Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.