Code 128:F00 PID 155 A

[rtjohnson1982]

07’ ISX check engine light keeps coming on/off and when the light is on the truck idles rough and the oil pressure runs higher than normal. I’ve replaced the EGR valve, EGR differential pressure sensor, manifold air temp sensor, air filter, and ran the rack and nothing seems to help. Only thing that’s changed is my bank account and I’m at a loss of where to go from here, any help would be very much appreciated!!! THANK YOU!