The engine P0140 Code is related with the car engine and real meaning of the helps to solve the car engine problem. It is necessary to know how to fix the general problem from the car engine. The regulator of each cylinder are reserved shut off using a pair of arms that change the conventional engine’s roller-type rocker arm. P0140 code one of these arms follows the cam profile while the 2ndarm joins to the valves. During normal engine action the 2 arms are joined by a locking pin. It is easy to fix the car engine if the all necessary tools and expertise are available.