The engine P20DF Code is available in many car engine and it is necessary to solve the car engine problem according to the manufacturer. The common or general mening of the code is not available for the automobile fixing. The general meaning of the code is P for Powertrain Code – Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 0 for Transmission. D for BBV Sensor Circuit Low Voltage. F for TFP Valve Position Switch-Drive Without Drive Ratio. The P20df engine code appears a kind of powertrain problem and it is easy to solve at the cheap cost.