Unraveling the Enigma of EVAP System Leaks A Journey to Efficiency

Hi ya'all, I found this short youtube video re: EVAP system leaks. This guy has put up many good diagnostic videos, this is another one. It may take some time before the light goes off. I think it took mine 3 or 4 days(different make). Clean the filler neck contact area and gasket ... I would normally say that an evaporative leak is not a problem as I deal with that all the time. Very few of them are loose or defective gas caps. HOW TO FIX EVAP CODES P0455 P0455 P0456 P0457 P0458 P0459 AND LEAN CODES P0171 (LARGE AND SMALL LEAK DETECTED) TOP5AUTOREPAIRS SUBSCRIBE. Any ideas where to go from here if the message or code returns? Oh, I have also replaced the canister vent solenoid, purge valve and oem fuel ... The P0455 diagnostic trouble code appears when there's a leak in the Evaporative Emission Control (EVAP) system, and the system can't maintain pressure. The ... Error code P0455 is a diagnostic trouble code that signifies a major leak detected in the evaporative emission control (EVAP) system. One can be something shorted electrically and caused the evap code or there is an oil or transmission leak that will need to be checked as well. Hoses are on the vapour can. The can is located under the truck, in front of the fuel tank, mounted on the frame. See attached picture for an ... The P0456 code indicates a small leak in the EVAP system, most commonly caused by a faulty gas cap. While not usually an urgent issue, it should be diagnosed ...