u/Cybernetic_Orgasm

Update 2: new battery, same issue, no start no crank.

Update to my last No Start No Crank post:

Still no start, no crank.

I was finally able to get to the 2 starter relays in the fender and replace them thanks to the helpful dish soap comment. This resolved the "P26E6 #0710 Starter Relay B Circuit High" error i was getting.

But now im still stuck with the last persistent error "U0100 #0718 Lost Communication with ECM/PCM A"

Any ideas on this one?

I checked the 20amp PCM fuse in the fender well while i was in there and it was good.

Battery is a 2 year old AGM reading 12.56 volts after being charged. Tried jumpstarting as well. Feeling a bit stumped on this.

Edit: 2018 Giulia TI 2.0 Q4 (AWD)