I’m thinking coolant got into my ficm and fried it. The coolant hose connector busted last night. This afternoon I changed the fitting and started the truck up. Ran fine for 30 seconds and died got u1800 code. Will not start. Also when I plug my autocal into the obd2 it’s not coming on. I also left it plugged in by accident over night bc I had been driving around checking fuel rail pressure. Went to do a boosted launch to get the desired pressure up and that’s when the hose let go. . Could weak batteries be causing this?