The meaning of the B1854 Code can be different and you need to know the exact meaning of the code for your car. You will get the real meaning of the code according to the manufacturer name and model number. The dictionary meaning of the code gives you some idea about the problem but it does not help you to solve the problem well. Before starting the solution of the problem, you need to know all information and have all machines what are used for fixing the problem. If you do not know how to solve the problem from the engine, you should hand over the car to professional.