The powertrain problem is very easy to solve. The car engine P2443 Code helps you for solving the car engine. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 4 for Transmission. 4 for BBV Sensor Circuit Low Voltage and 3 for Transmission Control Module Reprogrammable Memory. While fuel use was enlarged and acceleration of use of fuel was very cooperated as well as the loss of engine vacuum controlled to a risky loss of braking backing when the car engine P2443 code system was in 4 cylinder mode.