Only one of them! It's a smaller door and more remote in location. Seems like one of the engineers was experimenting with this one. The panel won't be available until electricity is restored to the ship, but once it is..an elaborate sudoku puzzle will appear.

If Frisk figures it out, the door will indeed open for them. It's a barren room that seems to have served some former recreational purpose. The shape of a cigarette is emblazoned into the wall, and there are one or two outlets available. That aside, there's an arrangement of magazines, a lighter and a flashlight lacking in batteries.