Did the delete kit also include delete of the Nox sensors? I'm about to delete my Titan and this error came up and that's what the dealer said was wrong. $800+ bucks to replace. Thats 800 bucks going for a deletion.I literally deleted instead of paying for a NOx sensor. How many miles on your 19? This should certainly be a warranty item
Just make sure you keep all the parts you delete!!!!!
do you have a link for the tuner?
I got one from 2016 titan if you interestedThere is an inlet NOX sensor that goes at the front of the exhaust and an outlet NOX sensor that is at the rear of the exhaust. They both have separate modules. The module with two sensors at the rear is the SCR Temperature Sensor module.