The diagnosis code B1300 Code is connected with the engine and for fixing the problem, you need to have expensive devices and some information like manufacturer name, model name and manual or the car and engine. The problem of the engine is on the body and for this reason, you do not need to change any parts or component of the engine. Reading the manual is necessary thing for solving the problem. However, you need to take the car to the professional if you do not know how to solve the problem. Do not try to drive the car if you find the problem on running the car.