Im a technician at a honda dealership in Canada. You are talking about the code you need to unlock the radio after you remove power from it. Correct? Those codes come from the factory with the vehicle to the dealer they are delivered. Each vehicle is given its own specific code. The only one who would have that code is the dealer that it was originally purchased from. The only other place it would be is in your owners manual if it was written in at the dealership.