My 2012 Civic EX is completely dead. Wont turn over. No dash lights. No interior lights. No door locks. No sounds. Nothing. I had not disconnected the negative battery cable before loosening the nut at the top of the alternator. My ratchet handle made contact with what I think is the oxygen sensor. It stuck to it for a second. Might it just be a fuse? I'm kind of panicking.