Recently swapped out a tranny in 2000 civic. Battery disconnected for about a week. When done, scanguage does not read mpg at all, and trip mileage is nonsense readings. The other readings I look at - intake temp and coolant temp - look good. No codes and VSS is working.
I would also disconnect the Scangauge for a few minutes. It might have picked up spurious signals caused by electric noise or the car booting up that crashed it.
Linear Mode
