Was a Harry Potter LEGO Game Released on PlayStation 2?

No, there is no Harry Potter LEGO video game released for the PlayStation 2.

The first LEGO Harry Potter game, LEGO Harry Potter: Years 1-4, launched in 2010 for PlayStation 3, Xbox 360, Wii, and PC. By that time, the PS2 was considered a last-generation console, and developers had largely stopped producing new titles for it.