The following are known CTRPF AR Cheat Codes for Super Mario Bros. 2 on Nintendo 3DS (3DS).

00040000000A6200.txt

[Infinite Lives]
2888C5DD 00000063

[Invincible]
2888C5D0 000000FF

[Infinite Health]
2888C5B2 0000003F

[Hit Anywhere]
D3000000 08000000
208076BF 000000E0
208076C0 00000000
208076C2 00000044
D2000000 00000000

[Hawk Mouth Always Open(Can leave the level without beating the boss and can go back to the previous level.)]
D3000000 08000000
20804DE2 00000000
D2000000 00000000