When the car engine P1200 Code comes on the screen of the car engine code reader, you need to get the meaning of the code first. The right meaning of the code helps to fix the car engine problem. Your car manufacturer gives the right meaning and you will use that meaning for solving the car engine. The automobile dictionary meaning of the code is found from online and it is not perfect always. The automobile dictionary meaning of the code is general meaning what is not used for solving the car engine. You must allow an automobile engineer to fix the car engine properly.