I have replaced all the spark plugs, cleaned and replaced o-rings on all the injectors and tried changing them around, still the same codes. I have noid(lite)checked the harness and its good. I have had the pcm checked and they said it meets ford specs. What else can be causing those circuits to stay open? Could the drivers in the pcm cause the circuits to stay open? and if so, would a reflash help? My truck has 90,000 miles on it and I am not getting any other codes.