The definition of the B1983 Code is necessary to know and if you do not get the real meaning of the code, you cannot solve the problem from the body of the engine if you have all expensive machines. Body of the engine has the problem and it is very easy to fix. From the general meaning of the code, you will get general information and that is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 9 for Fuel and Air Metering. 8 for Exhaust Gas Recirculation System Valve 1 and 3 for Transmission Control Module Reprogrammable Memory.