The dictionary meaning of the B2443 Code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 2 for MFG – Manufacturer Specific. 4 for Transmission. 4 for BBV Sensor Circuit Low Voltage and 3 for Transmission Control Module Reprogrammable Memory. The B2443 engine code looks a kind of body problem and it is not difficult to solve. You need to collect the manufacturer meaning for this code and if you do not get that meaning, you cannot solve the car engine. It is necessary to use expensive machines. Read the manual of the car engine for solving the problem.