The engine C1923 Code is a necessary thing and right meaning of the engine code helps to fix the car engine problem. The automobile meaning of the engine is not highly used for solving the car engine problem. There are now 2 main types of cylinder diffusion method used today, dependent on the type of engine. The engine C1923 code for the pushrod enterprise which uses solenoids to change the oil compression transported to the lifters. In their collapsed state, the lifters are powerless to raise their buddy pushrods under the valve rocker arms, ensuing in valves that cannot be activated and remain shut.