The engine C1431 Code is related with the car engine and it is necessary to know the real meaning of the code for solving the car engine. You will get some information from online about the code or the engine problem but do not use this meaning. Online, you will get automobile meaning and this meaning of the code is not appropriate for your car. You have to rely the car manufacturer. If you follow different meanings of different car manufacturer, still you will face problem. You should be careful when you select a meaning of the code and after fixing the car engine, a test drive is necessary.