[quote name='Bloomy']Did you try entering it through XBL or in Madden? Since it's 16 characters, I'm guessing it's an EA code that needs to be redeemed from in the game, not a 25 character XBL code.[/QUOTE]
This is true, sorry.
Mainly for someone that buys the game pre-owned. I bought it pre-owned a while back and had a valid code, then traded it in. Ended up buying it again new for $9.99 in the recent Best Buy sale, and obviously didn't need it, hence why I put it up here.