The automobile meaning of the car engine C1864 Code is found online and do not follow any meaning of the code for fixing the car engine problem. The valves of the respective cylinder are remained closed using a pair of the arms that substitute the conventional engine’s roller-type rocker arm. The car engine C1864 code is one of these arms what follows the cam profile while the second arm is connects to the valves. During normal engine process the 2 arms are combined by a locking pin. Do not drive the car with major or minor car engine problem as well as a test drive is necessary.