The engine P0174 Code is related with the car engine and if the right meaning of the engine code is used for fixing the car engine problem, your car engine may get new problems. The real meaning of the code is linked with the car manufacturer. Every car manufacturers have different meanings of the code and in the car engine manual, you will find that meaning. Do not drive the car until the car engine is fixed. You should follow right meaning and it is also found in the car engine manual. However, the P0174 engine code looks a kind of powertrain problem and it is not difficult to fix.