DTC U2100 for Front Hatch won't clear

GDN · 2025-05-02T19:23:46-0700

I made some Forscan changes to my truck this week. When I fired it up I had a fair number of DTC's that had previously been set, so I cleared them. However I've got one that won't clear, U2100 for the Front Hatch. U2100 is "Initial Config not complete", so it is a bit interesting. Any insights?

Ford F-150 Lightning DTC U2100 for Front Hatch won't clear IMG_8705

rugedraw · 2025-05-03T07:03:34-0700

I have a U2100 code on my DSM after I rolled back the software on it to fix the running board motors extended buzzing problem and the issue where the boards get stuck in a loop going in and out until I restarted my truck. However, I would rather have the soft code than the actual problem, so I am ignoring it.

What changes did you make that triggered it? Is everything working as it should?

GDN · 2025-05-03T07:15:35-0700

rugedraw said:
I have a U2100 code on my DSM after I rolled back the software on it to fix the running board motors extended buzzing problem and the issue where the boards get stuck in a loop going in and out until I restarted my truck. However, I would rather have the soft code than the actual problem, so I am ignoring it.

What changes did you make that triggered it? Is everything working as it should?

Thanks for the input. Everything is working fine and I haven't made any Forscan changes in about a year. I've had all of the Ford OTA updates (except BC 1.4) including FHCM-24.AC.AD and BCM-24.5.1 which both list Frunk improvements in their description.

This code was present when I started Forscan a few nights back. I check and clear codes before I begin making any changes. All others codes cleared.

I opened and closed the Frunk a couple of times and it operates normally. I don't recall if there is a PMI for that module. I can look and try a reboot to see if that helps.

Henry Ford · 2025-05-03T07:28:13-0700

Roll back whatever you did in Forscan and start over. If you the DTC goes away when you revert to a previous configuration you will have confirmation the changes you made were the culprit.

GDN · 2025-05-03T07:34:46-0700

Henry Ford said:
Roll back whatever you did in Forscan and start over. If you the DTC goes away when you revert to a previous configuration you will have confirmation the changes you made were the culprit.

I hear what you're saying, but that would have been the changes from a year ago and honestly while I do have my backups, I'm not sure I want to roll back a year due to other more recent OTA updates that might have added config items or updated items.

I guess all I have to say that if this DTC has been there for a year I'm not going to let it bother me. It was present before I made any changes in this session of Forscan.

Jesse-Infotainment · 2025-05-03T08:38:24-0700

Send me your vin. 2100 is initial config not completed. Which would be fixed by a write all in forscan

THe other possibility is the module was not programmed with the correct files. If you have to wrong file or it wasnt flashed that can cause a 2100. New modules that were not flashed will throw a 2100

2101 Incompatible config would be caused by a forscan change

GDN · 2025-05-03T11:45:53-0700

Many thanks to @Jesse-Infotainment for his knowledge and help. I'm sharing with his permission in case others have the problem

With his knowledge, he could see the DTC was set on the day I got SW release FHCM-24.AC.AD. It appears the update didn't write the new As Built config. So it's not related to any Forscan updates I did, but using Forscan I was able to fix it.

My module data did not match this on two different lines. It's a small module, so just compare all lines IF YOU"VE RECEIVED FHCM-24.AC.AD and then Write All.

Valid data from Jesse to go with this release for the Front Hatch Module.