The engine P20F6 Code is important thing and you will get the real meaning of the code from the manual of the car. Do not drive the car until you get the car engine is fixed. The automobile dictionary meaning of the code is found online but that is not necessary to use for solving the car engine. You should study the real meaning of the code and it is found from the manual of the car engine. Manufacturer name and model are necessary for solving the car engine. For the Powertrain problem, the engine code has come on the code reader screen.