Check engine light throwing code for fuel system lean and intake manifold runner sensor bank 1 reading high voltage, which makes sense since the variable length of the runner is what determines the fuel/air mixture. Suspect a vacuum issue but need a diagnostic scanner to narrow down on the exact problem. Is there a scan tool, non DRB3 ($$$), that can detail this issue and not cost an arm and a leg? A MB scan tool? If so which model? I have an Innova 5610 but it doesn't go deep enough. Thanks in advance.