The engine P1660 Code is found in many car engines of different car manufacturers. It is important to know the meaning of the car engine code for solving the car engine problem. If the real meaning of the code is found, it becomes easier to know the problem. So, take necessary action for solving the car engine. Taking the car to automobile repair center is a good idea if you are not an expert who can solve the car engine problem. This problem of the car engine can be fixed easily. Because the powertrain is the faulty here and it can be fixed without changing any part.