The dictionary meaning of the B1984 Code is a guidance of the problem of the car engine and it is found from online. The dictionary meaning is not all to solve the car engine problem. You need to know the real meaning of the code what you will get from the manual of the car engine. You have to get the model number and manufacturer of the car what you need to solve. The dictionary meaning of the code says that the body of the engine has the problem and it is very easy to solve. No component is necessary to change for solving this problem.