The engine C1278 Code is short description of engine and if the car engine code reader cannot verify the engine area, then the engine code has come. You will get the meaning of the code online for free but it may not be appropriate for your car engine. You need to follow the right meaning of the code what is related with the car brand and model. Do not allow the meaning of the code from different car manufacturer. You have to find meaning of the code according to your car. Until the car engine is fixed, do not drive the car.