Well, it looks like the Texas freeze may have gotten me after all.
Tried taking the Max out today and coolant temp kept rising an then smoke coming from engine. Got towed back to my dock and rand the engine diagnostics and got these 4 codes:

ECT higher than expected stage 1
CHT higher than expected stage 2
EMWT1 higher than expected stage 1
EMWT2 higher than expected stage 1

Any idea what these all are?

TIA