Hello to all. I just bought a 2009 Range Rover sport. It has P0730 P0731 and P0732. It reverts to 3rd gear after first takeoff. Scanner shows it is requesting first but stays in third. I do check Tran fluid. Refilled a bit. If you accelerate initially, first and second slip badly and kinda bangs into third. Is it most likely valve body problem? Or trans failure ? Whatcha guys think. Thanks in advance