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P0640 on the 2002 Ford Excursion

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0640
151732001-11-08. Service bulletin. SOME VEHICLES EQUIPPED WITH A 7.3L POWERSTROKE MAY EXHIBIT SOME AND/OR ALL OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES, P0230,P0640,P0670,P1662,P1690. *YH

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.