Service bulletins for the 2011 Mazda CX-9
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.
296 on file from NHTSA, as of 2026-10-19.
About P2A04 on the 2011 Mazda CX-9: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P2A04 are shown. Show all
| SA-004-19 | 2019-03-11. Service bulletin. ENGINE. Some customers may complain of a check engine light on while driving the vehicle. If DTCs P2A04:00, P2272:00 and/or other DTCs are found during diagnosis, follow the repair procedure below. P2A04:00 - HO2S (LH) circuit range/performance, P2272:00 - HO2S (LH) signal stuck lean, P2270:00 - HO2S (RH) signal stuck lean, P2A01:00 - HO2S (RH) circuit range/performance. |
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| SA-004-18 | 2018-04-23. Service bulletin. ENGINE. ome customers may complain of a check engine light on while driving the vehicle. If DTCs P2A04:00, P2272:00 and/or other DTCs are found during diagnosis, follow the repair procedure below. P2A04:00 - HO2S (LH) circuit range/performance, P2272:00 - HO2S (LH) signal stuck lean |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.