NOX Sensor 1/2

Courtesy of CHRYSLER GROUP, LLC

Disconnect and isolate the negative battery cable.
Raise and support the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
Disconnect the NOx sensor wire harness connector (2).
Remove the nuts (3) and NOx sensor 1/2 module (1).
Disconnect the wire harness retainers.

Courtesy of CHRYSLER GROUP, LLC
Using a six sided crow foot, remove the NOx sensor 1/2 (1) from the Selective Catalytic Reduction (SCR) catalyst.
If the NOx sensor fails to loosen use a torque wrench set to 160 N.m (118 ft. lbs.) and loosen the NOx sensor (1).
NOTE:
DO NOT use a torch as a heat source.
If the NOx sensor is still not loose after applying 160 N.m (118 ft. lbs.) then use a heat gun to heat the NOx sensor boss for 1 minute at 450° C (842° F).