action replay codes for pokemon black 2 not doing anything

Dug out my old DS and action replay to mess around on a solo save of black 2. The codes enter fine but nothing changes in game. Do they need a master code first, or am I using codes for the wrong region? It's a european cart if that matters.
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1 Answer

clark_afk Oct 20, 2026
dan_respawn
First thing, check the codes match your exact cart. Black 2 and White 2 use different codes, and US and EU versions are different again. That's the cause most of the time. Second, a lot of them aren't always-on, they need a button combo held to kick in (usually L+R or Select+something), so read the code notes. And don't turn on too many at once, some conflict and nothing works. If you're on an emulator make sure cheats are actually enabled in the settings and not just added to the list.