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B2879 on the 2014 Ford Flex

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.

Bulletins for this model year that name B2879
ASI-442112014-03-18. Service bulletin. FORD/LINCOLN: ON SOME VEHICLES, THERE IS A SITUATION REGARDING THE FUEL GAUGE WITH DIAGNOSTIC TROUBLE CODE (DTC) B2879 OR P1243 AND WORKSHOP MANUAL HAS BEEN UPDATED TO INCLUDE THE DTCS. MODEL 2011-2014 FLEX, MKT. *PE

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.