WenmarOpen by Wenmar Pro

Service bulletin AS-21686

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10039071
Published by NHTSA2011-07-07
Manufacturer's numberAS-21686
Manufacturer's date2011-01-01
NHTSA componentFUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS

NHTSA's summary

FORD: MALFUNCTION LIGHT IS ON WITH TWO POSSIBLE TROUBLE CODES STORED. 2011 F SUPER DUTY. *RM

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Fuel system, Fuel injection

Vehicles listed
FORD F-250 SD2011 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2011 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2011 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2011 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
ASI-444502014-05-14. Service bulletin. FORD: DUE TO CONTAMINATION OF FUEL, IN SOME TRUCKS, THERE IS EXHAUST SMOKE, LOW POWER, EXTENDED CRANK HARD START, NO START CRANK, RUNS ROUGH, SLOW TO BUILD OR LOW FUEL RAIL PRESSURE (FRP), ENGINE KNOCKING. MODEL 2011-2014 F-SUPER DUTY. *PE
ASI-221982012-05-23. Service bulletin. FORD: A TEST IS REQUIRED FOR HIGH PRESSURE PUMP TO PUSH DEBRIS OUT OF FUEL RAILS FOR INSPECTION. *PE