The following are known Code Breaker Codes for GT Advance 2: Rally Racing on Nintendo Game Boy Advance (GBA).

These codes are for the Japanese version of the game.

• Master Code – Must Be On
  00000000 0002
  10002430 0007
• Always 1st Place
  3300581E 0001
• Low Timer
  83006228 0000
  8300622A 0000
• Unlock All Cars
  43002130 FFFF
  00000006 0002
  3300213C 007F
• Unlock All Tuning Parts
  83002680 007F
  83002682 0055
• Unlock All Extras
  8300268C 0101
  8300268E 0001
• Unlock All Tracks
  43002110 FFFF
  00000006 0002