The following are known Action Replay Codes for Power Rangers: Lightspeed Rescue on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Master Code – Must Be On
F10607202400

Infinite Health
81064DF0 42C8

All Levels Unlocked
50001102 0000
81062508 0001

All Characters Unlocked
50000C01 0000
8006252D 0001