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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (P-HEV Drive Motor System (Diagnostics)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0BFF-1D: Drive Motor "A" Circuit Current Out Of Range >> General Description >> Malfunction Description

Malfunction Description

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This indicates a detection that the current does not flow as commanded due to motor output system malfunction. The following cases are assumed to be causes of this symptom.

Part Main trouble contents
Inside of inverter Inverter with converter assembly inner circuit malfunction
Transmission assembly
  • Malfunction inside the motor (foreign matter intrusion, etc.)
  • Open or short circuit of motor coil
Inverter low-voltage circuit Improperly connected connector
Power cable (for motor)
  • Power cable connection failure
  • Power cable open circuit or insulation failure
Hybrid vehicle control ECU assembly Hybrid vehicle control ECU assembly inner circuit malfunction