Fix the car engine properly and the engine P0814 Code will go away for solving the car engine. The engine of the car can be fixed if you know how to solve the car engine. The meaning of the engine code is helpful and make sure that the meaning of the code is from original car manufacturer. The P0814 engine code appears a kind of powertrain problem. This engine code tells about the problem of the car’s engine what is powertrain problem. If you know the process of solving the car engine, you have nothing to worry. The powertrain can be fixed at least cost.