Tyler Tremble
Junior Member
Just completed the Nox sensor changeout in my 2014 cummins. My mechanic who was super busy at the time recommended that I change both at the same time. Let me tell you something. The sensor in the back took about 10 minutes to switch out. The front one took a little longer; about three hours longer. If you can, find somebody with small hands! The little circuit box with the plug ends is really tough to remove and install.
