P0A1B on the 2023 Toyota Corolla
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.
| T-SB-0109-24 | 2024-12-07. Service bulletin. Some 2023 – 2024 model year Corolla Hybrid vehicles that utilize a mechanical key (without a smart key) may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1B1F (Generator Control Module Circuit Intermittent) present. The Hybrid Vehicle Control Computer (HV ECU) logic has been modified to reduce the possibility of this condition. Follow the Repair Procedure in this bulletin to address this condition |
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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.