The dictionary meaning of the P20AE Code is available online and you can use the dictionary meaning to get general information. Do not use the dictionary meaning for solving the car engine problem. You may get trouble if you follow the dictionary meaning. The general meaning of the code is not helpful. You have to collect the manufacturer information about this code. The code has specific meaning according to the manufacturer and you need to get that meaning for solving the car engine problem. The dictionary meaning for an engineer is not very helpful. That is why, you should rely on the manufacturer meaning.