The automobile meaning of the engine P205B Code is found online but it is not important thing. The automobile dictionary meaning is p for Powertrain Code – Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 0 for Transmission. 5 for BBV Sensor Circuit Low Voltage and B for TFP Valve Position Switch-Drive Without Drive Ratio. The engine code P205B OBD2 reports a sensor liability, extra of the sensor is improbable to solve the original problem. The liability is most likely to be produced by the systems that the sensor is monitoring, but might even be produced by the cabling to the sensor itself.