The engine C1177 Code is necessary code for solving the car engine problem and read the manual of the car is a way of learning about the car manufacturer and model number. This code has more meanings according to different manufacturers. Do not get the common meaning of the code for solving the problem. The common meaning is not helpful for solving the car engine. The C1177 engine code seems a kind of chassis problem. The engine system starts the C1177 code solenoid valve to switch oil pressure to the engine mechanism that is fit in the valve system to change valve timing between Low and High.