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Home >> Subaru >> 2021 >> Crosstrek Hybrid >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> P-HEV Drive Motor System (Diagnostics) (2 Of 3) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0A90-00: Drive Motor "A" Performance >> General Description >> Malfunction Description

Malfunction Description

This indicates a detection that the permanent magnet located in the rotor inside the motor is demagnetized. 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.)
  • Demagnetization of motor permanent magnet
  • 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