Once you find your code, jot it down and keep it somewhere safe and easily accessible. Entering the Code. The procedure for entering the car radio code is specific to the make and model of the stereo.

The eight-digit pin code you get is your radio code which you can input into the car stereo and get it working again. If you have a Honda Odyssey 2010, your Radio code might be a four or five-digit ...

Although they're less common on newer vehicles, radio codes (a.k.a. anti-theft or security codes) were designed to deter thieves from pinching a car's audio system.