no, no, you don't have to go to the dealer. my radio went dead and the local dealer wouldn't give me the code as they didn't sell the car (bought used) so
if you can't get the codes from the dealer or if they plan on charging lots, go to
radiocodes.com
or
radio-codes.com

it's been a while, but i think you need make/model, etc, and also the serial number for the radio.
it costs $38 for honda codes.

will