Comet checkout this link http://www.engine-codes.com/p0266_ford.html. I would start with making sure my connections are good look for wiring issues no bare wire on the harness next step would be to either clean the injector or try a good quality cleaner. Clear the code and see if it comes back...
Hi my handle is Shaft850 and I just joined the forum. I am having some issues with my stock 2008 F350 6.4L.
My wife and I were on our way out to the desert last weekend with the 5th wheel in tow and the truck went into reduced power mode and I got the wrench icon on the dash also.
So I am here...