The engine P1540 Code is an engine language what is necessary to understand for solving the car engine. The meaning of the code helps you to know the problem of the car engine problem. If you do not get the right meaning of the code, it becomes difficult to get the problem of the car engine. The right meaning of the code is found from the car manufacturer online and you can use automobile dictionary meaning of the code for solving the car engine problem when the correct meaning of the code is found from the right source. That is why, an automobile engineer will fix the car engine problem.