What P0716 usually means
P0716 is the plausibility branch of the turbine-speed story. Unlike P0715, which can be a more basic circuit failure, P0716 usually means the controller is receiving a signal that exists but does not line up with engine speed, commanded gear, converter behavior, or expected shaft-speed change. That makes it valuable because it often sits between a weak sensor signal and a real mechanical or hydraulic transmission problem.