The engine B2543 Code is related with the vehicle engine and if you do not use the real meaning of the code, you cannot solve the car engine problem. Read the manual of the car engine to get the meaning of the code. You should keep studying the real information and know the manufacturer name and model number. According to the manufacturer and model number, the engine code meaning can be different. You should use the expensive machines for solving the car engine problem. You need to use experience and without having proper experience, do not try to solve the problem.