You need to fix the car engine properly and you need to know the real meaning of the engine code. The engine P1277 Code is important thing and you will know many thing form the meaning of the code. The furthermost likely reason of this is that there is no refrigerant left in your car system. This can be reasoned by a leak in your system somewhere, which will have to be fixed before replenishing the refrigerant. If you are car-savvy and you own a set of air training gauges, replenishing the refrigerant is usually easy to do yourself. You must allow an automobile engineer to fix the car engine.