The trouble P1478 Code supports the automobile engineer to fix the car engine problem. Real meaning of the code is necessary to know about the problem. Do not drive the car with the problem. You can fix the problem of the powertrain easily but need to know about the code and need to use some tools. Do not drive the car until the car engine is ok. Check the car engine properly and check all symptoms to know the reason of the car engine problem. If you identify the problem, fix it fast. It is better if you fix the problem by an expert automobile engineer.