The general meaning of the car engine P3457 Code is found online and it is important thing for solving the car engine. Do not pick any meaning of the code what may not perfect for solving the car engine. The general meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 3 is SAE – Generic. 4 for Transmission. 5 for TP Sensor Learn Not Complete and 7 for Cruise Inhibit Control Circuit. It seems that here the main problem is powertrain problem and this problem is not very difficult to solve. You can easily fix the car engine by an expert automobile engineer.