The engine P20E6 Code is an area code of the car engine and getting the meaning of the code is necessary to know for solving the problem. This code describes the problem is a short and you need to get that meaning of the code. The manufacturer has the real meaning of the code according to the car. The car engine is problematic and this code has come by the code reader when the card reader cannot test the area of the car engine. Do not use general meaning of the code for solving the car engine problem and it may ruin the car engine.