ECU Reset?

[transitdude]

Can this be performed on these modern transit. Just thinking, if my van is holding onto an error code that might be causing my starting issues.

[Nighthawk]

The EEC V module performs a self test each and everytime the ignition is switched on and also during the drive, any non current codes are kept in a historic status for 80 drive cycles.

that means if the fault isn't found again during it's self checking process, the code will eventually be erased.

Historic codes won't cause a drivability concern, if you have issues when driving and codes in the memory, it's likely that they are live codes, but of a minor nature.