2006 379 Pete w/cm870 ISX.

[Peashooter67]

Short of the long both my peoplenet and my laptop both show that I have an ambient air temp sensor. The data/temp while driving or not shut w erratic temp values.

How do I find this temp sensor and before anyone says that it’s in my mirror, no it is not. That temp sensor only provides fore my dash gauge and show correct temp.

I know the input from n my ecm is pid #19. Peterbuilt was no help and says my ecm don’t have an ambient air sensor also to not be confused with ambient air pressure sensor.
Local shop says on frame near front on driver side.

Any help here?

2006 379 with Cummins ISX.