Explanation from the B1979 Code is necessary to get the problem and real meaning of the code is associated with the manufacturer and model number of the code. The dictionary meaning of the code helps you a lot to get the basic meaning and the basic meaning of the code 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 (Injector Circuit Malfunctions Only). 7 for Vehicle Speed Output Circuit and 9 for Kick-Down Switch Failed Short. Take the car to the automobile expert.