Chosen Solution

I have a Pokemon Pearl cartridge, and my 3DS will read it, but it won’t play. Pearl’s “Region identifier” thing: NTR-APAE-USA. It’s in a grey cartridge case, but I don’t know what the problem is. I’ve tried it in my DS Lite, and it gives a “Data could not be read” when booting the game up. 3DS gives a message similar to the DS Lite’s “An Error has occurred, Please turn off the system and refer to the instructions manual.” (The errors are shortened in the post, BTW.)

Are the gold contacts on the cartridge damaged or dirty? If so, clean with alcohol or a very slightly damp cloth (make sure it’s completely dry before putting back in to the console). If the contacts are clean then your probably looking at a component of the board in the cart being damage in which case there isn’t much you can do.