The following are known Action Replay Codes for Inspector Gadget: Advance Mission 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
dfd76f2f
8a5c45f4
053dadf5
78535eab

Infinite Hearts
0d237c43
b2670689

Max Score
fc3a474e
b32da1de

Infinite Lives
7f817f53
3fc91eaa

1 Hit Kills Boss 1
f4126dcb
40b63860

1 Hit Kills Boss 2
34e4623d
fd1c731a

1 Hit Kills Boss 3
56e28ebe
889574d0

Infinite Bombs
001c8361
b4b10910

Mega Jump
5c342619
9a8f7d8f

Press AR Button: Swim In Air
32c27b23
9eeec005
7fd49bc1
dbcf6c10