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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 P0A4B-21: Generator Position Sensor Signal Amplitude < Minimum >> General Description >> Malfunction Description

Malfunction Description

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This indicates that the resolver output signal value became abnormal. The following cases are assumed to be causes of this symptom.

Part Main trouble contents
Inverter low-voltage circuit Improperly connected connector
Transmission assembly
  • Short or open circuit of Generator resolver
  • Malfunction inside the generator (foreign matter intrusion, etc.)
Wire harness system between resolver - Inverter with converter assembly
  • Short circuit of Wire harness
  • Improperly connected connector (foreign matter, water intrusion)
Inside of inverter Inverter with converter assembly inner circuit malfunction