When a car engine is not working properly, it needs test and solving the problem as soon as possible. Otherwise, it may make more terrible problem in future. The car engine P1571 Code is found when the car engine is checked or tested. The engine code gives some information what helps to identify the problem and by solving those problem, you can make your car perfect for running. However, do not try to fix the car engine by yourself if you are not able to fix the car engine. You must allow an automobile engineer to fix the car engine.