The error P1518 Code is found in the car engine. You should fix the car engine but you need to know the real cause of the problem of the code. You need to test the car engine properly and the problem is powertrain. Usually, the powertrain problem is not difficult to solve. You do not need to add any component or part for solving the car engine. Every part of the car engine code is meaningful. Do not drive the car if the engine problem is not solved. Once the car engine is ok, you should take it for a test drive.