The dictionary meaning is general meaning about the car engine P20EC Code. You will get more information about the code if you read the manufacturer information. Do not drive the car if the car engine is problematic. You can use the general meaning of the code to gain knowledge but it does not help so much. The dictionary 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 e – BBV Sensor Circuit Low Voltage and C for TFP Valve Position Switch-Drive Without Drive Ratio.