The general meaning or common meaning of the P20E0 Code is available online and it does not help so much for solving the car engine problem. The meaning of the code is found as P for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 0 for Fuel And Air Metering. E for BBV Sensor Circuit Low Voltage and 0 for Transmission Engaged At High Throttle Angle. The P20e0 engine code appears a kind of powertrain problem. However, it is easy to fix if you follow the manufacturer meaning instead of general meaning.