This is the gearboxes safe mode, chances are you have a faulty input or output sensor. It is possible to do a diagnostic check without any specialist equipment. Check any of the FTO forums for details
My Automatic Mitsubishi Fto Doesn't Seem To Change Out Of Third Gear Even If I Put My Foot Down So It Starts And Stays In Third Gear And The Neutral Light Keeps Flashing, What's The Problem?
Suggestion: try moving the lever from park to low gear several (3-4) times in a row. as you do not indicate the age of the car...that is my only qwik fix suggestion. if this does not work check the transmission fluid. if it is full and clean I suggest you take it to a certified mechanic...good luck to you.♥