P0BF9

Drive Motor B Phase W Current Sensor Circuit

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced engine power
Check Engine Light Illuminates
Switching to emergency mode
Unstable operation of the hybrid system
Problems with regenerative braking

Causes

Phase W current sensor fault
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Engine control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion or damage
Test the current sensor with a multimeter
Check the insulation resistance of the wires
If necessary, replace the current sensor

Related codes

P0BF7 P0BF8 P0BFA