You must not try to solve or check the car engine problem if you are not the right person to do. The right person of here is the automobile engineer. An automobile engineer will use his experience for checking and solving the car engine. Some expensive machines and hand tools will be used here. The car engine P1509 Code has found when the car engine was checked. According to the meaning of the code, it becomes easier to solve the car engine problem. Right meaning of the code is important thing online and you will get the real meaning of the code from manufacturer of the car.