The engine P0775 Code is found on the engine code reader screen when the car engine is tested. You need to get the real meaning of the code for solving the car engine. The engine code helps only for solving the problem. The problem of the car engine is located on the car engine’s powertrain what is not difficult to solve. The valves of the cylinder are closed by a pair of arms that change the conventional engine’s roller-type rocker arm. The engine P0775 code is one of these arms follows the cam profile while the second arm attributes to the valves. During normal engine operation the 2 arms are linked by a locking pin.