Get the real meaning of the P2A05 Code for solving the car engine problem but if you want to get the general meaning of the code, it is also possible. The general meaning of the code is found online and use Google to know the general meaning. The general meaning of the code is P for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. A for Computer and Auxiliary Outputs. 0 for IC Circuit High Voltage and 5 for Transmission Control Module Reprogrammable Memory. The dictionary meaning of the code is not helpful so much for an automobile engineer.