2006 E350, 6.0 PSD
Did some engine braking down some mountain grades on my last trip (2 weeks ago), OD off light flashed for a while then went back off when I got on the interstate. TFT never reached a non-normal temp.
This morning, I started the van (after being parked since the trip) and see CEL code U0155 (cluster lost comm), OD "Off" light flashing on Trans shifter (indicating Limp mode), transmission shifting hard (or not at all). I cleared the code, it came back so it's probably something real.
The Ford dealerships near me won't scan without an appointment and are booked up for the next 2-3 weeks. I'll probably go somewhere else...
Does anyone know if Auto Enginuity will read the transmission trouble code? I've been thinking about getting the tool anyway, and this might be the reason.
I know it's a long shot and probably impossible, but does anyone want to venture a guess at the issue based on my symptoms?
On my list of things to check:
Battery condition (alternator voltage reads 13.5-13.7 while running)
Obvious wire chafing
Crud in Transmission and PCM connectors if I can access them.