Drive Motor B Phase W Current Sensor Circuit

Where it lives

For P0BF9, the sensor sits on the circuit this code reports. The description of P0BF9 reports a fault at the sensor.

Check these first

• A faulty hybrid vehicle motor assembly
• An open or short in the motor B phase W current sensor wiring
• A poor electrical connection at the motor B phase W sensor connector
• A faulty phase W current sensor in the motor B inverter

What to do next

1. Read the motor B phase W current on a scan tool
2. Check the phase W current sensor signal at the inverter
3. Inspect the motor B phase W sensor connector and wiring
4. Test the phase W current sensor circuit for open and short faults
5. Replace the hybrid vehicle motor assembly if the phase W signal stays wrong
6. Clear the code and retest

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