High exhaust manifold pressure.

[Luckywon]

Thank you so much for all that. Specifically about reading external voltage in signal wire.
The sensor in the machine now is the first new one although we repaired running wires after replacing that sensor. It’s about 150 from Komatsu I have a brand new one here we plugged in since but never actually screwed it in because it didn’t read any different. But maybe it needed to learn itself a bit?
I haven’t pulled plugs on ecm side yet just to make sure nothing obvious going on there. Dealer said oil can get down in there over time
You mentioned this as well