The following are known Action Replay Codes for Tee Off 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

Player 1 always on first shot
8C53819F
00000000

Player 2 always on first shot
D9588F40
00000000

Player 3 always on first shot
11A41A0E
00000000

Player 4 always on first shot
654B67DE
00000000

Player 1 always over par
8C53819F
0000000F

Player 2 always over par
D9588F40
0000000F

Player 3 always over par
11A41A0E
0000000F

Player 4 always over par
654B67DE
0000000F