The real meaning of the P20A7 Code is associated with the car engine and general meaning of the code is associated with the brand of the car engine. Do not follow dictionary meaning for solving the car engine. The dictionary meaning of the code is not valuable information and it does not help for solving the car engine. The general 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. A for BBV Sensor Circuit Low Voltage and 7 for Cruise Control System – Vehicle Accel Too High.