Nox sensor-where is it located?

[RMD3819]

I have a CE light code SPN3216FMI which according to FL is the after treatment internal nox sensor. It is not critical but needs attention and we have an appointment at Ocala FL in a few weeks.

I am just doing some planning since we are FT wondering where this item is and if they will need access to the engine hatch in the rear bathroom. The reason I ask is we have a cat and dog and would prefer to leave the cat secure in the rear bathroom as she does not do well in the waiting room. We will have to take into account the temperature in the shop and their pet policy.

It is not a big deal and if we have to take the cat with us just doing some advanced planning....

[Fiesta48]

The sensor would be on the exit end of the cat converter. Ask Freightliner which one it is. Easy to replace.