The car engine P1486 Code helps to solve the car engine and you need to fix the car engine as soon as possible. You need to know the process of solving the car engine and you should follow the right meaning of the code and right process. The regulators of each cylinder of car engine are kept closed using a pair of arms that change the conventional engine’s roller-type rocker arm. The engine P1486 code is one of these arms which follows the cam profile while the 2nd arm joins to the valves. During normal engine operation the 2 arms are combined by a locking pin.