This P0581 Code is found in the car engine and it is common code in many car engine. You should find the right meaning for solving the car engine. Every part of the car engine code is meaningful what you can know from the automobile dictionary meaning. The automobile dictionary meaning of code is simple meaning what is not perfect for your car engine. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 5 for Computer And Auxiliary Outputs. 8 for Exhaust Gas Recirculation System Valve 1 and 1 for TFP Valve Position Switch-Drive Without Drive Ratio.