i had to replace the battery to my civic and i forgot the code to my radio can anyone help??

you can contact the dealer...

call the dealer and give them your vin#

I think theres a post in the audio forum that can help you,.,.,..,.,.,

http://www.automotiveforums.com/vbulletin/showthread.php?t=346763

much props to turbcivic for this.

If you want shoot me the serial number and i will run it for ya.