Are there any psychic powers, Minor or Major, that allow you to plant false memories in a target?

Implanting false memories persay? No.

Suggestion (DotDG) may allow you to basically Jedi Mind Trick someone into THINKING they have a false memory (but actually lacking the memory itself).

Cipher Seed (RH) allows you to implant a message into someone or something.

And Forget Me, of course, allows you to make people forget who you are.

Besides these there are no fake memory planting abilities that I know of.

But "Forget Me" is just temporary.