Cummins ISB 6.7 340 HP crankcase pressure sensor

Update:

Got it back from Cummins, the crankcase breather housing was cracked. Probably cracked from the factory, just took a few heat cycles to really show itself. Covered under warranty.

Hopefully we can close the book on this issue.

Now, back to Cummins with a smoked compressor for the dash A/C!!

Mal