Get the meaning of the B2143 Code and if you want to solve the problem from the engine of the car, there is no way getting the real meaning of the code. Without checking the car engine by the cod reader, it is impossible to fix the problem of the car engine. However, the dictionary meaning of the code is b for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 1 for Transmission. 4 for BBV Sensor Circuit Low Voltage. 3 for Transmission Control Module Reprogrammable Memory. However, it is very easy to solve the problem.