Cummins ISB 6.7 340 HP crankcase pressure sensor

One other thing the friend who had the problem I referenced above was that he had the codes read and checked several times at Cummins authorized locations. at least one of them said they could not replicate the codes. He was later told by the Cummins shop that did the repair that smaller locations will sometimes "not find" or properly identify codes as they do not want to take on the job. It is just easier to not find anything and send folks on down the road.