P1279 on the 2004 Infiniti QX56
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 04022 | 2004-07-08. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P1278, P1279 A/F SENSOR B1 RICH-LEAN / LEAN-RICH RESPONSE. *TT THIS BULLETIN REPLACES PREVIOUS BULLETIN DATED 05/15/04. *TT |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.