If I DC the PAM, I get an orange info warning but aside from warning, can operates normally. Agreed, it’s weird there’s no DTCs and that’s why I’m inclined to think it’s a failing PAM.
It is strange that there are no DTCs. What happens if you disconnect the PAM? It may be pulling the network down. You may be able to disable the PAM in Forscan if the disconnected module causes too many problems. I have a 2016 but don't have a PAM so I'm just guessing.