lock on 95 altima.

I can unlock the door on the passenger side no problem, but I can't lock it at all from the outside. So if someone gets out my car, I have to take off the door panels, and press the mechanical metal parts on the inside. So I can unlock from outside and lock and unlock from inside. Is this a hard fix? I guess I have to replace those two metal rods that run horizontally and move when you turn the key? Btw its automatic locks but it works on every door except the one.