Do not ignore this engine P0930 Code. This engine code tells of the car engine problem what is located in the powertrain. This problem is minor problem what you must fix. Many people do not allow this problem serious as the problem is in powertrain. Fix the car engine by an automobile engineer. The valves of each cylinder are reserved closed using a pair of arms that substitute the traditional engine’s roller-type rocker arm. The engine P0930 code is one of these arms follows the cam profile while the 2nd arm joins to the valves. During normal engine process the 2 arms are linked by a locking pin.