The following are known Action Replay Codes for Disney’s Magical Quest Starring Mickey & Minnie on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

Master Code – Must Be On
9a4f2088
1264cf32
21de1981
74430aef

Infinite Health
8ee452d7
6660a22a

Infinite Lives
5c92471d
d5dd1fd6

Infinite Time
82b3692f
573f9cb3

Max Coins
d4e07a87
e774296f

Infinite Magic
c2d79b4a
55554024