2017 Durmax 5mph

[go91202]

Hello I had a code for NOX2 bad I did replace it and after diving it would not clear I live 60mile from my work so the reduce to 65mph went real quick and right in to 55mph.I got down to 25 miles to 5mph and the code will not clear so I tried looking for what parameters had to be met for this cycle to clear and it is still 2 cold for this shortly I will have the 70degree day required. While the truck is running the voltage is very similar to NOx 1. Is there anyway to clear the fault to go back to normal condition?
I also have a Foxwell scanner and under engine module the EGT's all read fine when I am under the reluctant tank #1 EGT shows-40 would this be a possibility why the fault will not clear?

[Rocko350]

There is a flash fix for the temperature issue from gm. It will need to be updated by them. #1 egt reading -40 would be from a bad or disconnected sensor. at egt1 location.

[go91202]

Thanks do you know if the MPVI3 can run a service bay test I was told I need to do that also.