it is 9400130 b2101e4 0000000 0000000 d200000 0000000
There is no Action Replay code to max happiness in Pokémon Diamond. You can easily max a Pokemon's happiness by feeding it berries and vitamins as well as giving it a soothe ball.
Action replay
Action replay is not an Pokémon item that can be obtained in Diamond.
No
Go to neoseekers.com
no you have to get is from an action replay or go to a Pokemon event
action replay
its a cheat
action replay
Action replay.
action replay
action replay