Thank you Azzurri,
I'm new to the forum and got here just by googling my issue and decided to give it a try and respond to this thread.
I noticed as well that this is an old thread and the person who helped other people before hasn't logged in since 2012.
I did some more research and saw that different people end up having to contact the dealership to get these codes; long story short, I bought a used radio to replace the one my son's Jetta had because it started giving him an error code. Luckily, the guy who sold me the radio was able to get the VIN from the car that the radio was taken from and I called the Dealership with the Radio Serial Number and the VIN # and they provided me the code!
Thanks again for responding and hope my response helps someone in the future.