i am workin on a 2016 c2 with cummins 6.7isb. on the exhaust right behind the scr are two sensor i am going to say one is nox sensor but not sure what the other is they are right next to each othe i have a short blowing atd fuse when i un plug the module going to one of those sensor it doesnt blow fuse i just dont no whatt the other sensor is i am sure one is the outlet nox