This engine P1557 Code set in many car engines. It is important to know about the car engine code when the car engine code appeared by the test of the car engine. You need to solve the car engine and meaning of the code is very important. The meanings of the code should be from right source and the right source is automobile manufacturer. You can use meaning form the automobile dictionary meaning what is found from online. The general or automobile dictionary meaning is also useful. You must not try to solve the car engine problem if you have idea how to fix the car engine.