Sounds similar to my problem with accidentally putting the wrong key in the door and it binding up after a slight turn. You might get away with a shot of WD-40 or similar in the lock, but you may have to swap the tumbler barrel out for the passenger side and just live with the problem on the passenger door. You can't swap the entire mechanism side for side, but the tumbler should swap over. BEWARE when you get the barrel out that bits don't go flying everywhere. Google will point you to how to remove the barrel.