The following are known Action Replay Codes for Transformers: Revenge of the Fallen – Decepticons on Nintendo DS (NDS).

Game ID: CXOE-C94A29EF

Max Energon (Press SELECT at World Map)
94000130 fffb0000
0217dcc8 000f423f
d2000000 00000000

Max Attributes (Press SELECT)
94000130 fffb0000
c0000000 00000004
2217d000 000000c8
dc000000 00000004
d2000000 00000000

Unlock All Internal Equipment (Press SELECT)
94000130 fffb0000
d5000000 00000001
c0000000 00000040
d8000000 0217cf9d
d2000000 00000000

Hold B to Moon Jump
94000130 fffd0000
620f045c 00000000
b20f045c 00000000
000000ec 0000a577
d2000000 00000000

All Cheats Unlocked
6209a958 00000000
b209a958 00000000
20000010 0000001e
d2000000 00000000