The engine C1101 Code has two different meanings but these meanings are not important things for solving the car engine. The general meaning of the code is not mainly necessary for solving the problem. You need to get the genuine meaning of the code what is knowns as manufacturer meaning of the code. The manufacturer of the car has set a specific meaning for the car engine and this meaning is necessary for solving the car engine. However, once you have all machines, information and experience, you can solve the problem. After solving the problem, testing the car is important thing.