Well, the van wound up inside and I hooked up Forscan. I am inexperienced, and probably doing more than one thing wrong.
There were only a few coding options available. I spent half the day trying to decipher the hex codes and couldn't find anything relevant to a 2004 E350. If it was a 2011 F150 it would have been easy.
In theory, it's possible, but without knowing which line to edit its mostly impossible. I gave up, I'll be taking it to the dealer. The only thing I may have changed is the seat belt dinger.
So I dug into another issue that came up, hard start cold. #1,3,5, & #7 Glow plugs had codes. Thats all the passenger side bank. Seems like an odd coincidence. I pulled the doghouse and went looking for the glow plug controller. Fortunately I found it on the back of the drivers valve cover, way better than if it was on the front of the pass valve cover like the pickups. I started pulling the controller to swap out with a known good one off one of my trucks, when I noticed the main power wire was partially pulled out of the plug on one of the connectors. After a little more investigation I realized it couldn't make contact inside the plug, and this would certainly disable 1/2 of the glow plugs.
Access is pretty limited, as with everything on the top of a van motor. I did manage to force the wire into the connector and make contact with some very long double jointed needle nose pliers. After reassembling everything the codes for #1,3&5 were gone, but #7 remained. I figured thats good progress, 7 of 8 is way better than 4 of 8. I'll let future me deal with #7.
So, the reason the van was inside was that I was trying to trade my solid barn doors to someone with windowed barn doors. After 6 weeks of flakes that never followed thru, I finally found someone that would commit. So, I pulled the side doors and took them to town to swap. The doors I got were not quite as nice as mine, and were 6 years older so the plain white didn't quite match. Eh... maybe future me can fix that as well.
Doors are still filthy in this pic, they
're not actually as bad as they look. Since I'm planning on doing a rocker accent I'm not to worried about anything below the body line.