The following are known Action Replay Codes for LEGO Racers 2 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
8e3383ad
f9d35953
b9665eac
382d832b

Start on Last Lap
1a087a1f
6c5bd603

Get 1st Place
72d800e3
f83b14e1

Low Lap Time
60146998
c7e4df84

Take No Damage
39b628ed
af42cb8e

Player 1: Press AR Button to Win
31a37d62
0e7b1020
53b8d452
055b3799

Player 2: Never Win
fcbb8509
3d40cb4b

Player 3: Never Win
72c7d917
c714ff5f

Player 4: Never Win
c1fd19bf
00fd6f5b