The following are known Code Breaker Codes for Armored Core 3 on Sony Playstation 2 (PS2).

These codes are for the Japanese version of the game.

• Master Code – Must Be On
  FA7A006E 32A2E051
• Max Money
  2A9B7939 05F5E0FF
• Infinite AP
  1ADD1F84 00009C3C
• Infinite Boost
  1AE11F84 00009C3C
• Infinite Right Ammo
  1AB11F7D 000003E7
• Infinite Back Ammo
  1A311F7D 00000063
  1AB11F7E 00000063
• Infinite Inside Ammo
  1A311F7E 00000063
• Infinite Extension Ammo
  1AB11F7F 00000063