Rep Power: 0

Sorry I know this has probally been posted like a thousand times but I unhooked my battery and put it back and when I turn on my radio it says code. I've looked every on the car for it but I can only find the serial number. When I called I A dealer they said they can't give it to me over phone and I have no dealers near me. So if any you that work at Honda or know how to fix it can help me out the s/n is 22085831 if u can pm me or email mikekazak@gmail.com