The B2112 Code is connected with the car engine and it is necessary to fix the car engine problem if you want to avoid sever accident on road. Do not drive the car if the car engine reader shows the code. For solving the engine problem, it is necessary to get the real meaning of the code and real meaning of the code is linked with the real problem. Manufacturer sets the code and set the meaning for each code. That is why, meaning of the code differs for each code. So, you need to know the manufacturer name and model number.