2005 Odyssey having "issues"

Hi, we have a 2005 Odyssey that we love but as of late it has been having some issues. The drivers side window has been running very slowly, the automatic doors occasionally do not work and the other day the odometer quit working. Of course when I took the vehicle in it wasn’t having any problems, but the dealership was happy to charge me $110 for diagnostic testing. Any one else have this problem or have a clue what it might be?!

Bad ground under the dash (wires). Bad engine to body ground, (one useless looking wire).