Service bulletins for the 2023 Toyota Corolla
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
141 on file from NHTSA, as of 2026-10-19.
About P0A1B on the 2023 Toyota Corolla: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0A1B are shown. Show all
| T-SB-0109-24 | 2024-12-07. Service bulletin. ENGINE. 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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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.