The engine P20F1 Code is important thing and it makes terrible problem. When you get any problem in your car engine, you should take the car to automobile engineer for solving the problem. You should get the genuine meaning of the code and if you do not the right meaning of the code, you cannot solve the problem. However, You should take the car to professional who knows how to fix the car engine. It may not necessary to change any part of the car engine. If you do not know how to fix the car engine, then you need an automobile engineer for solving the car engine.