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B145C on the 2022 Subaru Crosstrek

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name B145C
18-225-242024-10-02. Service bulletin. This Bulletin announces the diagnostic procedures to be followed when diagnosing DTC B145C (Heat Pump ECU Communication).

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.