WenmarOpen by Wenmar Pro

P0266 on the 2011 Ford F-650

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 P0266
16-00642020-12-07. Service bulletin. Some 2011-2016 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit a fuel knock type noise at idle, illuminated MIL with one or more of the following DTCs: P0263, P0266, P0269, P0272, P0275, P0278, P0281, P0284,
16-00492016-06-22. Service bulletin. 6.7L DIESEL - FUEL KNOCK AT IDLE WITH MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED WITH MULTIPLE DIAGNOSTIC TROUBLE CODES (DTCS) ISSUE Some 2011-2016 F-Super Duty vehicles equipped with a 6.7L diesel engine may exhibit a fuel knock type noise at idle, illuminated MIL with one or more of the following DTCs: P0263, P0266, P0269, P0272, P0275, P0278, P0281, P0284, P02DA, P02D0, P02D1, P02D2, P02D3, P02D4, P02D5, P02D6, P02D7, P02D8, P02D9, P02CC, P02CD, P02CE and/or P02CF stored in powertrain control module (PCM) memory.

2 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.