The C1404 Code is linked with the car engine and it is necessary to know the real meaning. Do not use general meaning of the code for solving the engine. It may create more problem but if you like you can know the general meaning of the code. Without real meaning of the code, it becomes difficult to solve the car engine problem. The C1404 Code is a kind of chassis problem and it can be solved. The engine system, in conjunction with the engine control module or powertrain control module, activates the engine C1404 code solenoid valve to regulate oil compression to the engine instrument that is installed in the valve system to switch valve timing between Low and High.