The dictionary meaning of the P20B7 Code is available online and you can use the dictionary meaning to get general information. The automobile dictionary meaning is common thing what you can find online. The real meaning of the code depends on the manufacturer. The dictionary meaning of this 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 7 for Cruise Control System – Vehicle Accel Too High. Now you can easily decide to fix the car engine if you have all necessary tools and information.