The solution of the engine P0054 Code is important and it is necessary to know the real meaning of the code. If the real meaning of the code is not known, do not try to fix the car engine problem. The car engine manual has information like car model and manufacturer number. Do not follow the general meaning of the code what you can find from the online. The real meaning of the code is found from the car manufacturer and it is related with the model of the car. The P0054 code is related with powertrain of the car engine and it is easy to fix.