NOX Sensor 1/1

Courtesy of CHRYSLER GROUP, LLC

Disconnect and isolate the negative battery cable.
Disconnect the NOx sensor 1/1 wire harness connector (2).
Remove nuts (3) and the NOx sensor module (1).
Remove the EGR cooler. Refer to COOLER, EXHAUST GAS RECIRCULATION (EGR), REMOVAL .

Courtesy of CHRYSLER GROUP, LLC
Using a six sided crow foot, remove the NOx sensor 1/1 (2) from the Diesel Oxidation Catalyst (DOC) / Diesel Particulate Filter (DPF).
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).