Its a software bug
Software or probe issue?
Yeah and look at the shift in Max on the second pic with the 400 number, it's over 3k.AC-P is the high side AC pressure.
Probably not Celsius values, otherwise the MAX temp registered would be 5,677 °F, not realistic. Cast iron melts around 2,200-2,500 °F.
Are the 3rd Gen the ones that have that funky AC issue on some rigs where you can over pressure the AC system?
Yep I monitor my AC pressure when the temperature outside starts to get warm.Yes they do (at least mine does) so I monitor the AC-P all the time.
Here is a great thread on the subject https://www.turbodieselregister.com...rams-ecm-defect-opening-the-ac-relief.258779/