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OakleyRiver

Hello, searched around and did not have much luck on this topic.

Cummins ISX CM2350 ESN 79950919.

It is in a 2017 Kenworth T800, Single air breather.

Check engine will come on and off through out a weeks time. Only codes ever in it are 2346 Turbocharger turbine intake temperature data valid but above normal operating range. 6725 Intake manifold 1 pressure data valid but above normal operating range. Went through Cummins diagnostics and found a few things. Had a few charge air cooler leaks and boots leaking. Replaced, repaired and confirmed no more leaks from turbo outlet to cylinder head. Replaced both sensors, intake sensor was very full of carbon build up. Updated ECM to lastest file and sent it back out. Ran a few days and then came back on again for same codes. Both codes are very close in time stamp. Looked through and did not see anything alarming. Pulled intake manifold sensor again and it was still very clean. Did find someone on here that had a issues with barometric pressure sensor so I replaced that also. Sent it back out and at end of the day if came back on. Inspected wiring harness and it do not see any rub areas. Those two sensors and run by separate wires, no common wire between the two. Any one fight this battle before or have anything specific to look for? Thanks.

Let me know if there is any more info I can provide. Trying to be as clear as possible, Thanks for the Help!