The car engine P2771 Code is found from the car engine and meaning of the code is the great solution. So, real meaning of the code should be for solving the car engine. The general meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 7 for Vehicle Speed Output Circuit and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. This general meaning of the code may use when the right meaning of the code is not found for solving the car engine.