The P1147 engine code is a kind of powertrain problem and this problem can be fixed by an automobile at the least code. Because, it is not necessary to change any part form the car engine. The engine code has various explanation and you must collect real meaning of the code. The real meaning helps most for solving the car engine but automobile dictionary meaning is also useful but not, you will use the automobile dictionary meaning when you have the right meaning of the code. The engine code is various car engines but right meaning of the code is found by the name of your car and car manufacturer.