

Diagnosis sought from the hive mind:
2014 Rex (130k)
Driving home a few weeks ago the Rex turned on and was functioning normally for 15 mins, then suddenly (at 65mph) I'm kicked into neutral and get the dreaded "drivetrain: stop carefully" warning. And now I have an intermittent CEL (check engine light). I nursed it home by getting the Rex to start via the emissions testing mode.
I've continued to drive it and have been able to confirm that it will do this every time, however if I manually activate the Rex (via programmed radio key) before it reaches minimum battery level it operates without issue.
Summary: when the battery reaches minimum level where the factory programming would activate Rex it error's out, starting Rex before minimum battery level mitigates issue.
When I got the drivetrain error I saw these codes:
U1848
P0B3C
U0100
P1B2C
P1C79
P1AD1
P1E4B
Now I have these:
P0480
P14FA
P0480
Where to begin? Thanks for your thoughts...