Before you move it back try both outlets where it is. And take something like a vacuum or other easily movable object and plug into those outlets to see if they work or not. I bet the outlet is either bad or is controlled by a switch on a wall somewhere, or even possibly connected to a GFI outlet which has tripped. If its in the garage and the garage has a cement pad and the house isn't too old, it's probably building code that the outlets be hooked to a GFI plug in case your washer overflows.