Vw evap codes P0442 small P0455 large leak

Diagnosis and repair of evap codes p0442 small leak and p0455 evap large leak on a 2001 Vw Jetta 1.8T
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watch every evap video I've made on teh following playlist • Vw evap codes P0442 sm...

[@williamberta6638]

Awesome video that explains all the possibilities of what an EVAP code could be making it easy to diagnose and repair really appreciate the help.

[@CoolAirVw]

you are welcome. Hook me up and click that subscribe button.

[@patbarch8278]

As a mechanic of 25+ years I got a chuckle out of your interruption, interruption of your interruption comment, it happens every blasted day! And then having to retrace what you were doing and rechecking things so your interruption doesn’t cause you to skip something because your train of thought got de-railed... usually by the time you are back on track and moving forward you get interrupted again... great videos, KZbin needs more people like you teaching that diagnostics are key to repairing a vehicle correctly the first time instead of firing the parts cannon at it and hoping it fixes it.

[@CoolAirVw]

I get interrupted so often, I often cant remember which task I need to go back to.

[@shitsrandom6781]

O

[@dmcdow]

I am the KZbin mechanic. You are the mechanic. Great video! I love your diagnostic approach to problems.

[@CoolAirVw]

Wow, thanks!

[@masonpugh3637]

Nice video very thorough Love how easy you can get to the fuel pump Love how easy you can get to the fuel pump

[@CoolAirVw]

thanks for watching

[@2old2rodeo]

Good video. Stumbled on it. I have a 99 Chevy Express with the P0442 code. I went ahead and ordered a gas cap and purge valve(throwing parts at it) thinking if that didn't fix it I would just live with the light on the dash. After watching your video, if the parts don't fix it I may investigate a little further... Thanks!

[@CoolAirVw]

load up the cannon and fire it. I guess those parts are a cheap attempt though.

[@dougankrum3328]

You get a thumbs up for having a blue Mag-Light like mine...!! I'm working on my 1999 DODGE Ram van 1500...V-6 engine...same 2 trouble codes...I'm just using an Innova 5210....it does show the codes, and can erase the annoying 'check engine' light...but then you have to drive a while to reset the other codes... I've been mechanic on stationary equipment for a while...so things are a bit different...but still troubles can be hard to find and fix...

[@CoolAirVw]

From memory, I'm dont work on dodge much, but I think that generation would have a leak detection pump VERY similar to the VW one in this video. I don't know if dodge scan tool has a "test" like I did in this video though, but the system probably works identically. Other channels that deal with dodge more often like south main or pine hallow might be better but pump is explained very well by Bentley publishers Evap video here on youtube. Dont forget a purge valve that sticks open slightly can cause evap codes.

[@billrhodes5765]

Nice detective work. You covered most of the system. Easy to understand. Helped diagnose mine. THANKS!

[@CoolAirVw]

Glad it helped!

[@user-yd9go6ct5i]

Awesome man your doing a great job.I have this same problem and you're doing a fantastic job demostrating this issue.

[@andreyceciliano4048]

Amazing! Thanks so much for sharing your knowledge

[@CoolAirVw]

We just fixed a P0456 on a 2013 Tiguan. (gascap)

[@edwardhrvoich1786]

Vaseoline works wonders on the seal and collar threads ! Might be a bit messy but allows the collar to seat and tighten nicely.

[@CoolAirVw]

Good tip! Thanks!

[@dougankrum3328]

Yes..I'm having the same 2 trouble codes...can't pass smog here in Calif...I did get the helpful tip about Vaseline, but haven't dropped the tank yet...no other easy access to the fuel pump..1999 DODGE Ram Van 1500...V-6 engine. I had the tank out for previous owner...I was surprised at the size of that tiny fuel pump...!

[@augustusczar7375]

To anyone buying the purge valve make sure the plug in the valve is large and open. I got one with plastic pieces in it and it would not fit my plug. Buy the oem one even if it costs extra

[@CoolAirVw]

good tip

[@carlosbiscaia6205]

Thanks for the video, really easy to understand, i think that gona help me to fix my car's problem.

[@CoolAirVw]

thanks!

[@dannymyers3617]

Most helpful video I have seen. Thumbs up!

[@CoolAirVw]

Watch the whole evap playlist. kzbin.info/www/bejne/joildmt8msacmJI

[@MFSHARTY]

When he said “I’m gonna grab a torch and find the leak that way” my eyes lit up 😧

[@CoolAirVw]

safety 3rd!

[@rod8970]

Right?!? When he said that, I said out loud, "ummm, what????" 😳

[@enemy2921]

I will add this to my favorites and hoping my fix is as easy as yours!

[@CoolAirVw]

get 'r done!

[@robertgaggero982]

That gasket looks like a pain in the ass. GOOD job man, nice trick with the soapy water to detect the leak.

[@CoolAirVw]

thanks

[@robertomijango6207]

great video boss thank you for you time good diagnostic

[@CoolAirVw]

thanks for watching and commenting on my video.

[@PanamaSticks]

Very nice job. I'd hire you. I have a leak. Everyone here keeps changing the cap.

[@CoolAirVw]

sometimes it is the fuel cap

[@RandomlnternetGuy]

An interesed Canadian DIYer that wishes he was a diesel mechanic but is actually a city bus driver / beer sales rep.

[@CoolAirVw]

thanks for watching. Hope this helps you if you have a VW.

[@maxthecaddy8451]

Good finding and Diagnosis, 👍luv the VCDS 👌

[@CoolAirVw]

I Love the VCDS too! How would we fix these Vw's without Ross-tech!

[@maxthecaddy8451]

@@CoolAirVw i think you would be fine👍

[@rod8970]

Think you just found my problem as well. Great vid!!! 👍🏻

[@CoolAirVw]

If my video helped you fix the car then do me a favor and click that like button and subscribe. Thanks for watching.

[@woody95124]

Very good knowledgeable work bud....Good job..

[@CoolAirVw]

thanks!

[@rapiddog6666]

when you get interrupted, you can put your pam over/towards the camera and do the same when you are back recording when editing you can fast farward and see the pams flash infront the camera and know thats where the cut is. just an idea.

[@CoolAirVw]

Excellent! I needed to know that technique! Thanks.

[@CoolAirVw]

what about when I gaff repeatedly and cant seem to spit out a complete coherent sentence like a dottering old octogenarian president?

[@Attohertz]

Should the gasket be lubed at all? Had a hard time putting it back together...

[@Mrdubomb]

I always thought the dtml drew a vacuum and not pressurized the system, when you have a leak under vacuum and not under pressure a smoke machine makes it hard to diagnose these sometimes.

[@CoolAirVw]

I have limited experience with other systems but I know of at least one Dodge that has a pump like this vw.

[@ionizer96]

9:10 and we have a fix, leave the vicegrips on the hose, put the liner/inner fender & wheel back on :D

[@CoolAirVw]

Sure!

[@onemischiefmaker7032]

i had a p0422 DTC due to a loose gas cap.

[@CoolAirVw]

are you sure it wasn't 442?

[@ishaiahsmith]

I’d say your a mechanic , we the viewers are the KZbin mechanics. Unless your a mechanic viewing this

[@CoolAirVw]

thanks for watching.

[@augustusczar7375]

I've had this code for over a month and after I fill up at the pump I have to pump the gas to start the car and hold it at 1500 rpm for a minute or 2 or it will die until I put it into gear. After this it starts and drives fine. Mine is a 2014 jetta base 2.0 gas. Trying to find the purge valve currently

[@CoolAirVw]

Yea just slap a purge valve on it. It will probably fix it.

[@augustusczar7375]

@@CoolAirVw I unhooked the purge valve from the computer and it has tons of suction. Does this mean it's stuck open and that's the air peak?

[@augustusczar7375]

It was the valve. Put my finger on it didn't feel it click. Got a new one and I can feel it click. I can now fill up with the car running even which I don't usually do, but is what I consider to be the ultimate test for this issue. Thanks for all the help

[@CoolAirVw]

@@augustusczar7375 your welcome do me a favor and subscribe.

[@KE.T500]

I have similar issue with my 2012 VW Passat se. And 2wks ago I recently put on a new purge valve. And last month I bought a new gas cap from O'Reilly auto parts store. I'm still getting P0442 code. Need help any suggestions?

[@southwesttrucker8543]

Thanks

[@CoolAirVw]

Thanks for watching. Please subscribe Mr. Trucker.

[@Kevin-wy8kc]

Hi did they remove the EVAP service port on the 05 Jetta 2.0? Because it has it on my 2001 1.8 t GTI

[@CoolAirVw]

I dont know. Not very many of them have the port.

[@clivegilpin372]

I loved the video 👌

[@CoolAirVw]

Thank you for the compliment and thanks for watching.

[@antonioruvalcabarobles1191]

Nice vídeo I have a Jetta mk4 2.0 engine, CHECK DOES NOT APPEAR ON THE DASHBOARD but in the obd2 scanner torque application it appears incomplete evap system..... What is wrong with my evaporation system???

[@CoolAirVw]

There is no information in your post that would lead someone to know what your problem is.

[@benjamin4394]

What about a P2450 code on a 2013 beetle. Just replace pcv valve. Now this code came up

[@CoolAirVw]

Sorry I cant take the time to walk you though the diagnosis. I might be able to answer a specific question but you would have to define the code. I dont have every code number and its definition memorized.

[@benjamin4394]

@@CoolAirVw it is the p2450 Evaporative Emission System Switching Valve Performance/Stuck Open

[@danman9017]

boy you know vw.thank

[@CoolAirVw]

thank you.

[@fr4nkie82]

I have a 99 Jetta with the same problem. Cant get my inspection done because of it. I think it's the standard v5 engine, any suggestions to try and find where the problem could possibly be?

[@CoolAirVw]

never heard of the standard V5 engine. I have a whole playlist of evap code diagnosis. Do the tests in those videos.

[@fr4nkie82]

@@CoolAirVw Ill find out which Jetta it is again... I have a feeling it might be the canister under the seat... The car was hit from behind pretty bad

[@augustusczar7375]

So, replaced the purge valve. No check engine light or any lights on the dash. When I go to start it sometimes the lights come on the dash and it won't start again. Take the negative off the battery for a half hour and then it will start again and no lights on the dash what could be causing this?

[@CoolAirVw]

I dont know. Someone good with diagnostics is gonna have to make some checks on the car.

[@nickvitobovino3486]

Hi, quick question? Is there a way to program the ecm to put p0455 large evap leak to sleep in the background without triggering the check engine light? My engine is a 99 vw 1.8t that I installed in a completely different vehicle, I integrate the two systems together and I’m down to one code left. Thank you.

[@CoolAirVw]

Yes, I could do it if your ECU was later (reflashable) but I think yours isn't so you'll have to find a tuner that will work with that early ECU.

[@jm71681]

Would a fuel smell under the hood accompany the P0455 failure?

[@CoolAirVw]

I dont think so.

[@fredcamacho9923]

Does the tank pressurize when the key is turned to the on position? The engine not running.

[@CoolAirVw]

No.

[@joaquinjr3488]

I have a 2010 VW New Beetle and I’m getting the code p0455 for a large EVAP leak. My gas cap light came on one day and then afterwards my check engine light ended up coming on. I replaced the gas cap with a VW gas cap and I still have the light. I got it tested by a VW specialist and they told me it was the leak detection pump. I have trust issues and I’m wondering what you may think.

[@CoolAirVw]

tests like the ones performed in this video would be necessary to determine the problem. At this point in my Vw career I haven't seen a failed leak detection pump. i have 4 (I think) videos on evap codes with good diagnostic info in all of them. Here is the playlist kzbin.info/www/bejne/joildmt8msacmJI

[@fermmmm111]

Can i get away with just changing the evap leak detection pump? Or would i have to change both the evap canister and pump?

[@CoolAirVw]

the fix in this video was the fuel pump seal. changing the LDP and cannister wouldn't have fixed this car and would have been a waste of money. Point being you have to diagnose.

[@nncooper]

You mentioned you programed his keys, are you able to program cut keys if sent to you?

[@CoolAirVw]

the ar is programmed, not the key. Can you send me the car?

[@nettelplos]

👍 from Denmark

[@CoolAirVw]

welcome to the channel. Thanks for watching from Denmark!

[@peter210garage]

Hey I have same 2 codes on my mk4 r32 I replace purge valve, leak detection pump, I did smoke test and did not find anything also replace fuel cap,now I still have one code for small evap leak?

[@CoolAirVw]

vapor leak from fuel tank? Did you check what fixed this car?

[@PerAsperaAdAstra217]

Hi, I have a question during the output vcds test evap purge valve n80, I hear hissing air in the middle of the engine, is it supposed to be? Audi a6 c5 1.8T

[@vantruong6420]

Hi. Can I have ask you a question. My car turn on the engine light on coat 442 and 455 and my car is Audi 2002 A6 how much is it to fix it ?

[@CoolAirVw]

various problems can cause this code. Different problems will carry different price tags. You should probably have someone look at it.

[@vantruong6420]

CoolAirVw Rm do you have a shop that fix cars?

[@CoolAirVw]

@@vantruong6420 Yes.

[@garyharwood5989]

All I done was took mine off and sprayed bit of dw40 in each end a few times walah aint had a engine light on in months now

[@CoolAirVw]

so you lubed up the purge valve? Those things stick all the time so I'm sure thats good advice for sticking purge valve. But would that have fixed the one in this video? Or would it have fixed the one in the following video? kzbin.info/www/bejne/kHqai6OHZrWVnZY

[@lustsenpai2367]

few questions, new car guy here so i know close to nothing. 1. i have a 2.0 would i go about the fix the same way as you did with the 1.8? 2. were you fixing the P0442 or P0445 code? 3. would i be able to fix this at home? or would it need to go into a mechanic to get the specifics on what’s in need of fixing?

[@CoolAirVw]

You would go about the diagnosis the same way. Fix could be something different. this repair fixed both codes if I recall correctly. Diagnosis might take a mechanic. The info here should help diagnose it but if you dont understand or dont have the equipment then head to the mechanic.

[@EXOVCDS]

White & black... that's Dorman trying to not be racist! LOL

[@CoolAirVw]

One time where a Dorman part works. I'm glad they make those.

[@bernardaflores1720]

what a weird design for a gasket, the engineer was hang over on a Monday morning.

[@CoolAirVw]

thanks for watching.

[@freddiemendoza4188]

From your experience will a large Evap leak cause a small misfire on one of the cylinder?. Vehicle in question is a 2.7T Audi S4. Thanks in advance

[@CoolAirVw]

It can if its the purge valve sticking open. Makes a vacuum leak.

[@freddiemendoza4188]

@@CoolAirVw I noticed that the pipe that’s near the exhaust that leads to charcoal canister on the driver side has a huge gash in it. So I believe that’s why I’m getting the large Evap leak code on VCDS. One more question…. In order to smoke test the vehicle is it preferred if the vehicle is off or on idle? Thanks in advance

[@CoolAirVw]

@@freddiemendoza4188 car off, I think. Might depend on what your doing.

[@Scratcher1960]

Could this become a drive-ability issue if left?

[@CoolAirVw]

probably not.

[@Scratcher1960]

@@CoolAirVw Thanks for your response. I have VCDS so I will probably follow your tracing practice and try and track mine down in the summer when I have more time

[@gabrielgomez2747]

Where can i get the computer program to run those test.

[@CoolAirVw]

ross-tech.com

[@thebiggerman6975]

anybody can do it with the correct equipment, not much help to the guy in his driveway

[@CoolAirVw]

sure.

[@masonpugh3637]

You're trying to teach and trying to make money at the same time there's nothing wrong with that

[@CoolAirVw]

thank you

[@aromero9243]

Your thumb nails are killing me lol

[@CoolAirVw]

Maybe this channel is more suited for you. LOL kzbin.info/www/bejne/bX3SkoWqq8ucjpY

[@aromero9243]

@@CoolAirVw I fainted when I what the video was about. That's just mean dude, mean 😬

[@CoolAirVw]

@@aromero9243 I said, "LOL!" Sorry 'bout dat!

[@CoolAirVw]

@@aromero9243 Maybe next April 1st I'll go get a manicure and a pedicure or maybe a spa day and video the experience, and I'll post it up and say "channell content changing". How 'bout da? LOL!