The following are known Action Replay Codes for Crazy Taxi 2 on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

Crazy Pyramid All Open
1234DAA5
0000FFFF

All Balloons Popped
E4D71759
00000000

Infinite Game Time
C12BE644
00003600

Infinite Arcade Time
C12BE644
00003000

Infinite Passenger Time
7835D2BE
00002331