The P20BE Code has an explanation and if you do not get the real explanation for the code, you cannot solve the problem from the car engine. You need to read the manual of the car engine and there you will get all necessary information. 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. B for BBV Sensor Circuit Low Voltage and E means TFP Valve Position Switch-Drive Without Drive Ratio. It is easy to solve the problem from the engine by an engineer if he gets all real information.