The following are known Action Replay Codes for Star Wars Episode I: Racer 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

Infinite Truguts
8111CB1A FFFF

One Lap Race/Finish 1st
E4171B13
00000002

All Races Finished First
8111CB0C 3FFF
8111CB0E 3FFF
8111CB10 3FFF
8111CB12 00FF

1 Lap Race
81121CAA 0002

Open All Characters
8111CB14 007D
8111CB16 FFFF

Lots of Truguts
F88995EB
0000270F

Open All Tracks
8111CB08 FFFF
8111C80A FFFF