Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P0BFD (30): Motor Current Sensor Circuit Malfunction: General Description
The motor control module (MCM) controls the IMA motor output based on the signal from the phase motor current sensors. When the motor current sensors malfunction, the output torque of the IMA motor may not be able to be controlled normally. The MCM monitors the sum of the three-phase current (IUPH, IVPH, and IWPH) sensors at regular intervals, and when it deviates from the permissible range (-50 A to +50 A), 10 is added to the counter. Conversely, when it is in the permissible range, 1 is subtracted from the counter. When the counter exceeds a specified amount, a malfunction of the phase motor current sensor is detected and a DTC is stored.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.