I have an 06 Civic LX sedan. Automatic. It wont start. All the lights work but nothing happens when I try to start it. I dont think its the starter bacause it just all of a sudden happened. It was fine before. Im wondering if it has something to do with the anti theft system because the battery went dead in the key. I put a new battery in the key disconnected the battery and re-entered radio code and nothing. Ive search the internet for answers and tried the put the key in and turn to on position , then turn to the lock position. Nothing seems to work. Is there some kind of reset for this? Any help is appreciated. I gotta get to work in the am.

 

I had a similar thing happen to my 06 EX. The battery died while I was out of town. When I got a new battery, the car would start but cut out after about a second. After talking to the dealer, they said the immobilizer system needed to be reset to my key.
Reed

 

Started fail "suddenly" I'm positive that's your problem, no fun to change either, passenger axel needs to come out to change it.

 

*starters