The following are known Action Replay Codes for Power Rangers: Time Force on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

Master Code – Must Be On
4fe4182e
461caff9
a7a3bc85
721b82ef

Infinite Health
351710ca
eccfefdb

Infinite Energy
a5b0e356
807e5738

Have All 3 Weapons
a5b0e356
807e5738

Infinite Continues
09ef3c8f
cc8e1cad