The car engine P2701 code seems a kind of powertrain problem and it is important thing but the problem of the car engine is easy to solve. You need to solve the car engine by the actual meaning of the car engine code and you may use the general meaning of the car engine code. 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. 0 for IC Circuit High Voltage and 1 for TFP Valve Position Switch-Drive Without Drive Ratio.