Have a p 1249 code and a p 0475 code p0603 code on my f350 diesel.plugged it in on a odb2 scanner no codes but they show up on my hyper tech programmer i reset them and they come back whats up

If your using a generic code reader like from the local auto parts store, they won't retirieve powerstroke specific codes.

P1249 is wastegate control valve performance
P0475 is exhaust pressure control valve
P0603 is KAM (keep alive memory) error

Your truck has a back pressure valve that will close to aid in the warm up of the engine. Exhaust back pressure valve can stick and give the P0475. The P1249 might be related. If your disconnecting the battery to clear the codes that's where your getting the P0603. Your turbo need to come out and the back pressure valve ooked at..it's in the turbo pedestal.