The dictionary meaning of the P2A10 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. 1 for Low Coolant Circuit and 0 for Transmission Control Module Reprogrammable Memory. The general information of the code is not enough for solving the car engine problem. This general meaning can be known by the general people but for an automobile engine, it is necessary to get the real meaning of the code and that is why brand name of car and model number are necessary to know.