The automobile dictionary meaning of the car engine P2571 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 5 for Computer And Auxiliary Outputs. 7 for Vehicle Speed Output Circuit and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. You need to fix the car engine fast if you want to drive the car safely. With the car engine problem, you may not drive or you may add new more problems in the car engine. The real meaning of the car engine must apply for solving the car engine.