Service bulletins for the 2019 Infiniti QX50
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.
172 on file from NHTSA, as of 2026-10-19.
About P0448 on the 2019 Infiniti QX50: what the code means, and the bulletins and recalls about the same components.
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By trouble code
Only bulletins with trouble code: P0448 are shown. Show all
| ITB19-012a | 2019-12-06. Service bulletin. ENGINE; EQUIPMENT. MIL ON WITH DTC P0448 This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin. |
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| ITB19-012 | 2019-06-24. Service bulletin. ENGINE AND ENGINE COOLING. 2019 QX50; MIL ON WITH DTC P0448 IF YOU CONFIRM The Malfunction Indicator Light (MIL) is ON with DTC P0448 (EVAP canister vent control valve) stored. ACTION Reprogram the ECM, if applicable. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.