The meaning of the B1743 Code is important thing to know and if you do not know the meaning, you will not understand where the problem is set. The dictionary meaning of the code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 4 for BBV Sensor Circuit Low Voltage and 3 for Transmission Control Module Reprogrammable Memory. The dictionary meaning of the code says that the problem is related with the body of the engine and it is very easy to solve as minimum price.