The engine P2442 Code is an important thing. The meaning of the code helps to automobile engineer to fix the car engine. You must depend on the real meaning of the code and solve the car engine. If you allow an automobile engineer, then he may use automobile dictionary meaning of the code. If the real meaning of the code is not found. 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 2 for A/C System High Pressure High Temperature.