Go to the "My Madden" option from the Main Menu. Then, choose the "Madden Codes" section from the "Madden Cards" screen. When you enter this screen you can enter the following cheat codes whenever you're ready.
Use this Madden card and your opposition will just be able to throw high in the air passes, you should find it more easy to intercept those passes.
5LAWO0
Use this Madden card and your Quarterback will have 100% accuracy for all of the current half.
WROA0R
Use this Madden card and your Quarterback will not throw an interception or fumble the ball for all of the current half.
XL7SP1
10/12/2006
Free Advertising
Ever since owner mode in the Madden series was made, this glitch has worked. Firstly see if you have a home, away or bye week. If you have an away or bye week, just go the week normally. If you have a home game, check what day your game is on. This glitch works for games on every day except Mondays. So if your home game is not on Monday, fill out your advertising budget to the maximum amount allowed and play or simulate your games EXCEPT MONDAY NIGHT FOOTBALL. When you reach Monday Night Football, go to owner mode and put your advertising budget back on 0. Simulate the Monday Night Football game and head into the next week. You'll find that you'll have all the benefits of advertising your game without throwing money out of your pocket.
11/22/2006
Historical Teams
Enter into the Madden Codes within the Madden Cards.