Glitching Action Replay

I don't think there are any codes, unless you have something like an Action Replay. Sorry. If you use an action replay, you can add codes on that.
This website has some action replay codes http://www.supercheats.com/nintendods/pokemondiamondcodes2.htm

You need to go to a store like Wal-mart, and go to the videogame/electronic aisle, and buy the Action replay. If you use it and it doesnt have Pokemon Platinum game cheats, then use the usb connector and the action replay disk to download more, or you can google the cheats and manually enter them on the action replay.

I dont know how this worked but for me i had loaded every single cheat at once, that seemed to be the problem. once i put down only one or two cheats it worked fine.also know that some cheats are scams and wont harm your ds game but make the screen turn white and unable to load. be careful if you get the walk anywhere cheat you could get lost and the game would crash. to activate most cheats you press L+R but for some it is different and it will tell you what to do. my favorite cheat is this one:

94000130 fdff0000
b21c4d28 00000000
b0000004 00000000
94000130 feff0000
00000890 01ed0001
d0000000 00000000
da000000 00000892
dc000000 00024620
c0000000 0000000b
d7000000 00000000
dc000000 00000006
d2000000 00000000
it allows you to obtain 493 master balls. if you wanted a mew you would throw out 342 masterballs then hold L while walking in grass. i got 342 by subtracting 151 (mews number) from 493. the pokemon will be the level of the surronding pokemon in the grass. good luck and hope this helps

I figured it out. I went to the list of all the games it had. Pokemon Pearl wasn't there, but Pokemon Diamond was. I clicked on Diamond and I got to cheat on Pearl!

Same thing happened to me, the problem could be that the game code was entered wrong into the Action Replay, there are a few things you could do about it. You can take out you Action Replay Code Manager CD and delete the game and re-enter it. Or if you don't have the Code Manager CD, go into the internet and look up the code for Pokemon Diamond Version, and fix it on your Action Replay.

Good Luck!

You have a bad cheat or a wrong cheat enabled. That is why it's not working. Just disable that cheat and it should work fine.

no you dont have to buy another game just delete some cheats have certain amounts like 7 or 8 no more than 10+

Remove all the action-replay enabled cheats and try again. If this doesn't solve the problem, the game has been corrupted, although this is highly unlikely because action replay should not be able to do this. If your son still wants to use cheats, have him use one cheat at a time and gradually add more to find out where the limit is where the game breaks.

you are idiot gamer of pokemon bastard wew you are weak.....

search codejunkies and everywhere else.if they have a code for that specific game(if its pokemon diamond it should still work)and then hit the pencil deal that had marks behind it. make sure your already inside the pokemon pearl cheat list and type "hyper ball cheat"or something lilke that then put in the code that was on the website and WALA! your on your way 2 becoming a pokemon MASTER!