I believe I have the correct code in the original owner's manual.
I believe the error said "e" when the radio was turned on. I think I entered the code incorrectly a few times and then it showed error "ErrE"
Ok, good. You will have to disconnect the battery for a few minutes to reset the radio.
After you reconnect it, it will display CODE . Enter the 5 digit code.
If it doesn't work, stop and get back to me.