The car engine contains many engine code and those codes are highly meaningful. The engine P0478 Code is also found in the car engine and meanings of the code are provided by different sources. The manufacturer of the car is also provided a meaning of the code for solving the car engine. You need to use the correct meaning of the code what is found from your car manufacturer. Do not use any other meaning of the code what is found from different car manufacturers. So, it becomes easier to solve the car engine. You should fix the car engine with the car engineer if you unable to fix the car engine.