if you are talking about the 12V outlet under the lid in the armrest console between the seats, then the most likely cause would be the PPOINT fuse in the under dash fuse panel. That fuse panel is a pain to check.Also, there is a relay in a junction block above the glove box, maybe the relay is bad or perhaps somebody tried the mod in
http://forums.genvibe.com/zerothread?id=6403 and messed it up somehow.It could be that the wiring on the outlet is not quite right. Check out
http://forums.genvibe.com/zerothread?id=13711 for some info on how people can add such an outlet to the 05 and up since it is no longer standard.