The o2 sensors location

[BearChris]

Look at 4 on the bottom picture. Then relate that to the second and then to the 3rd pic. Figured I would be the first to figure it out. And the sensors are around $30-40 at advanced Auto, AutoZone, O'Reilly etc....

 

[BoostN]

Are you having issues with the sensors?

 

[BearChris]

Are you having issues with the sensors?

I'm thinking so. I am running the multi meter on the sensors below. I found one that is open to continuity and runs infinite ohms

 

[BearChris]

This one

 

[GearHead]

This one
View attachment 2623

That looks like the DEF Injector. I have had to replace the #2 sensor which is described as the Carbon Level Sensor, still an O2 sensor, in my wife's Jeep GC eco. It had set a code, cleared, set again, replaced with OEM as the aftermarket did not cover, that was two years back. $185.00.