ISX cm2250 emissions help needed

[dslmchnc]

Sorry for the long time between posts. I finally fixed this truck, well, its been running without issue for about a month now. (knock on wood) the final repair i made was to replace the barometric pressure sensor, the egr differential pressure sensor, the intake manifold pressure sensor, the egr outlet pressure sensor and the exhaust manifold pressure sensor. i realized that the truck wasn't failing for pressure issues, but rather soot load codes. this soot load is a made up parameter that the ecm uses an aggregate of different readings to create. thank you guys for all your help, and i hope this thread benefits someone in the future. feel free to pm me with any specific questions.