P0BF1
Drive Motor B Phase U Current Sensor Circuit
The current sensor for drive motor B phase U reports a circuit fault. Phase current measurement is unreliable.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Common causes
Ordered by how often each turns out to be the cause.
- Current sensor failedCommon
- Wiring faultPossible
Parts involved
- Drive Motor B Phase U Current Sensor
- Wiring Harness
- Hybrid Control Module
P0BF1 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.