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P0A1F on the 2017 Toyota PRIUS

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0A1F
T-SB-0032-19_Rev2019-07-15. Service bulletin. TSB: REVISION NOTICE June 17, 2019 Rev1: ? The Diagnostic Trouble Code (DTC) and has been updated. ? The Required Tools and Equipment section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2017 model year Prius Prime vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1F94 (Battery Energy Control Module [BECM] Unexpected Operation) when the ignition switch is on and the vehicle is in ?Ready Off? status for at least 5 minutes. Follow the Repair Procedure in this bulletin to address this condition.

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.