You need to get the real meaning of the B2545 Code of the car engine and if you do not get the real meaning of the code. You cannot use the general meaning of the code for solving the car engine. Do not worry if you do not know how to solve the problem. You must get the manufacture name and mode number of the car for getting real meaning of the code. The general meaning of the code is not mainly used for solving the car engine and it is found from the online. You can use Google for searching engine.