The engine should be fixed by real meaning of the car engine code. The engine P1777 Code is important thing and the problem can easily fixed if you take help from expert automobile engineer. The problem may run for there is no refrigerant left in your system. You should check the car engine problem. If you do not know how to fix the car engine or check the car engine, you must take the car to a repair center where you will get all machines and tools for checking the car engine and solving the problem from the car engine.