Advanced Diagnostics

Advanced Diagnostics - 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.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The sum of the counter value is 1,000 or more.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the MCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.