The engine P0509 Code is important thing for solving the car engine problem. It helps to solve the car engine problem fast and you should give the car to automobile engineer for solving the car engine. The automobile engineer will use best effort to solve the car engine problem. Once you get your car fixed, then you can drive the car. You can learn about the car code from the automobile dictionary meaning but do not use that meaning for solving the car engine. The expert automobile engineer knows the process of fixing the car engine without facing any problem.