DTC P0A1D: Hybrid Powertrain Control Module: Trouble Symptom

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.

EV traveling/Auto Start Stop does not operate.
Motor assist does not regenerates.
Sometimes driving power and shifting behavior are different from the normal states.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". < Ref. to CAUTION , General Description.>

DTC PROCEDURE

Step	Check	Yes	No
1 CHECK HPCM. Turn the ignition switch to OFF. Wait for 30 seconds. Turn the ignition switch to ON. Perform the Clear Memory Mode. < Ref. to HYBRID POWERTRAIN CONTROL SYSTEM , OPERATION, Clear Memory Mode.> Read the DTC again. < Ref. to HYBRID POWERTRAIN CONTROL SYSTEM , OPERATION, Read Diagnostic Trouble Code (DTC).>	Is DTC P0A1D detected? (current malfunction)	Replace the HPCM. < Ref. to HYBRID POWERTRAIN CONTROL MODULE .>	Even if DTC is detected, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.