Service bulletins for the 2019 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.
394 on file from NHTSA, as of 2026-10-19.
About P011A on the 2019 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: P011A are shown. Show all
| 07-007-19-3638 | 2019-11-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; ENGINE. Some customers may complain about poor heater performance even after the engine reaches normal operating temperature. This may be caused by a plugged heater core. For 2014-2016 Mazda6 and 2013-2016 (US spec) / 2017 (Mexico spec) CX-5, the CHECK ENGINE light may turn on with DTC P011A:00 (ECT sensor No.1/No.2 performance problem) stored at the same time. NOTE: Refer to TSB 01-015/15 if the customer is using a block heater at temperatures below freezing. To solve this concern, two mass production changes have been implemented. a) The concentration of the coolant has been increased so that the amount of the contained anti-rust additive is higher. b) The composition of the coolant has been changed (the ratio of the anti-rust additive has increased). |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.