The powertrain of the car engine may be faulty and the engine P0660 Code has come on the engine code reader screen due to the problem of the car engine’s powertrain. If necessary step is not used for solving the powertrain of the car engine, the problem of the car engine will not be ok. By the right meaning of the code, it is easy to solve the car engine problem. Do not use any false mening for solving the car engine. The right meaning of the code is from the car manufacturer of the car. You will get various meanings of the car engine code from other sources.