After trying everything from gas cap, smoke test, new hoses and a new fuel pump seal for 4 years and still having the engine light come on with the P0455 code, I finally pulled the cluster panel and pulled out the engine light bulb and smashed it. After 4 years of dealing with this stupid code, I finally said enough was enough. Jeep still runs great.

Thanks for emphasizing using an OEM gas cap. Your statement that 80% of these codes can be eliminated (by the right gas cap) made me purchase a $24 gas cap at the Chrysler dealer and to toss out my $12 aftermarket one purchased at Autozone. Comparing the OEM and aftermarket side by side you can see the OEM is designed to seal much better. You saved me a lot of stress and money days before my daughters wedding!

Now That's how you do a you tube video. Great, professional and to the point which most of us like. Congratulations on a great, helpful video.

Great video young man. I'm an old car guy from way back and the newer vehicles are not always to diagnose the problem. Thanks again.

Thanks for taking the time to put this video together. It was very clear and helpful!

Great, Concise yet thorough checklist and explanation of most likely items! Not Too wordy, Not too brief! and appreciate you putting them in a bit of sequence of Most likely possibilities! Thanks a million!

Thank you! To the point and very informative. Finally a channel to subscribe to so I don’t have to sift through all the random (hardly helpful) videos out there. Well done!

Thanks for sharing this video. We just bought our daughter a 2009 Hyuandia Accent. We believe the purge valve needs to be replaced as this is a common problem po456 code came up when tested. Thanks for your clear precise explanation. Also, the following codes came up 300 303 and 304. They are all misfire engine codes. The guys at the parts store told her that it may be a spark plug, or wiring. This was in cylinder 3 and 4. Thanks again.

This video legit just solved my problem. Check engine light gone. Thanks man

Changing the gas cap worked for me. Thanks!!

GREAT STEP BY STEP EXPLANATION. Myself NOT mechanical this year going the route for DYI. THX

Great video! I really appreciate the simple yet thorough explanation, as well as the pics throughout giving a visual to the part or tool being mentioned. Videos like this are what's great about KZfaq. P.s. it was my gas cap. (07 Chrysler town and country)

thanks for the information. I've been reluctant about paying $500 to the dealer to fix evap canister and hose on my 2004 Navigator. I just may purchase the parts from Autozone and have a mechanic put them on.

Wow, this is first time I got the information I'm looking for, you did not beat the bush (around and about) to give information that will help Thanks you for taking time to explain what the code mean,

thanks great video, perfect way to show n explain how to fix the problem... thanks again

Excellent video. Thanks for the pictures showing the parts, the steps to solve problems, and the estimate on repair cost. very useful.

Love the explanation . Very easy and reasonable . Thanks a lot

Great info my friend keep up the good work. Happy Holidays

Thank you for sharing your expertise!! The information you provided was very clear. Keep up the good work.

great video. informative and to the point. good pictures showing what parts are great addition as well.