The meaning of the B1943 Code is necessary thing and the original real meaning of the code is extremely imperative thing. Real meaning of the code can be known by reading the manual of the car. The manual describes the manufacturer name and model number of the car. The dictionary 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). 4 for BBV Sensor Circuit Low Voltage. 3 for Transmission Control Module Reprogrammable Memory.