Service bulletins for the 2022 Mazda Mazda3
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.
436 on file from NHTSA, as of 2026-10-19.
About P1BC5 on the 2022 Mazda Mazda3: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P1BC5 are shown. Show all
| 01-004-25 | 2025-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. Some customers may experience the battery and engine warning lights illuminating with following DTC being stored. P0A7A:00 (ISG) Integrated starter generator (ISG) (internal stator coil driver circuit) U-phase, V-phase, W-phase: Malfunction detected P1BC5:00 (ISG) Integrated starter generator (ISG) (internal stator coil driver circuit) X-phase, Y-phase, Z-phase: Malfunction detected This concern is caused by improper overcurrent detection logic of the DTC. To eliminate this concern, the Integrated Starter Generator (ISG) control software has been modified to optimize the threshold for DTC detection. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.