I had a P0171: System Too Lean (Bank 1) that I had been chasing for 3 months and after spending close to $445 on various parts, the problem was with this purge valve that fixed the loss of power and lean code issues I was having...
Well that explains why my car is hard to start after getting fuel, mine was stuck open! Replaced it and no more CEL and it starts right up after fueling.
Hey Robert, just curious, do you remember what your CEL was? I'm trying to chase down a P0456 and I'm thinking about replacing this part. Just wanted to see if yours was the same. Thanks.
Thanks for this quick and useful overview of what the N80 is and does! Even for nonspecialists like me the Bentley vid is well worth watching at least through its full, animated description of what the entire evap system does. When they got to the part about how the N80 is _pulsed_ to control how much recovered vapor is routed back to contribute to combustion, I realized why your vid included a "not recommended as a test" label at the point when you mention just hitting the N80 with 12-V dc to listen for clicks.
About to be a lot of people watching this video again. 17 GTI, just got the recall noticed. Super informative video! Might be able to take care of this myself.
Your advice was awesome. After I topped off my gas tank, I couldn't get my car to start. It kept coughing..... Had you not mentioned "don't top off your fuel tank..." at the end of the video, I would have never made the connection.
I know this video is kinda old but if you are here for the P0456 small leak code. It is going to be your N80 purge valve its around $30 to $90. Usually Bosch is the best way to go. Dealership here in Texas charges about $400 w/tax. Have had this valve changed twice in 5yrs ownership at 46,xxx & now at 60,xxx.
I got a P0456 on my 2010 Audi Q5 replaced my gascap and the P0456 is back I just ordered a purge valve praying that this fixes it because I really don't want to hunt after the canister or the detection pump hoping that its the valve
You probably dont care at all but does someone know of a way to log back into an instagram account?? I was dumb forgot my password. I would love any assistance you can offer me
@Jake Issac Thanks so much for your reply. I found the site thru google and Im trying it out atm. I see it takes quite some time so I will reply here later with my results.
Could this cause a rough idle, and maybe throw a faulty throttle body code? I’ve had a shop try and do a relearn but it’s unable to do a throttle body relearn with a cel. Have already replaced throttle body.
Sup Charles...had a walnut shell cleaning which helped a lot with improved power...replaced a water pump on the 2013 CC which solved a bad leak.....now im getting a lean code...I cleaned the mass flow sensor ...the code came back on it was 2177 Im thinking from watching this vid its the purge valve...great breakdown I will get one today and let cha know!
Wonderful video. However, the canister does not have CHARCOAL in it. It has ACTIVATED CARBON which is completely different from CHARCOAL. Instead of filtering the fumes like charcoal would, the "activated" carbon ADSORBS the fumes (grabs the molecules and holds them onto the surface) of the carbon until there is room inside the fuel tank for the gas fumes. It is similar to magic but the bottom line is, it prevents the fumes from escaping to the atmosphere. WARNING: When you fill your gas tank, do NOT keep clicking the pump to try to fill the fuel filler neck all the way to the top. You are risking getting too much liquid fuel in the system and if you saturate the "activated" carbon, you "de-activate" it. In other words you have killed it. Your CEL will come on and you will have to buy a new and very expensive carbon canister. How do I know this? I retired from many years working as a production supervisor at a plant which makes this activated carbon.
Just had mine replace on my 2019 Jetta with 24,000 miles. Strange thing is once it was replaced, along with a cracked line, it now runs better than it did when I first got it! Thinking that line was cracked from new. Pulling out in first the car has much more torque now. It was always just weird feeling starting out from a stop since it was new. Strange but it's much better now.
Very helpful. I have a P0441 code (Incorrect purge flow) on a B5 A4 and was reading from a lot of sources that it could be the canister. I'm happier knowing about this part as one of these from bosch is about $40 as opposed to a $200+ Canister
I`m currently doing some work on a 2002 Passat GLS 1.8T. One of the complaints is the CEL is illuminated. Bit of back story; I worked on this car a couple months ago with the same "EVAP Very Small Leak" DTC. Spent way to much time diagnosing it and decided to let another friends shop who specializes in VW`s have a crack at it. They also couldn`t keep the CEL off, it would always turn back on. Recently the car was brought back for another go and I decided to check the Purge Valve. We verified that the solenoid is functioning. I applied 20" of vacuum and in 10 Min. the vacuum had dropped 10". I wasn`t sure if this was out of spec. Luckily my neighbor just happens to also have a B5. I performed the same test on his N80 Valve and in the same 10 min. vacuum only dropped 2". His car doesn`t have any DTC`s. I`m replacing the N80 tomorrow with a new OEM one. I`ll post an update as to whether the DTC comes back.
I keep having issues with my MK7 Jetta. Taking it back to dealer for the 3rd time. First noticeable symptom for me is that my remote start won't work. CEL takes a few days to come on. I've used my VAGCOM to clear it a couple of time because I don't have time to have dealership deal with it, under warranty thankfully. But this is getting quite annoying. The new valve seems to have molded plastic tubes rather than rubber clamped tubing. I will have to ask them to check the charcoal canister this time around.
Hi what if you add a bartek resistor that cancels the purge solenoid? And its faults is that ok will the fuel trims get restored if everything else is in order? Please let me know
Had a one green check valve fail while checking the for boost leaks, that n80 valve would make a buzzing noise during 15psi boost leak check, best fix is to tune, and delete the problem entirely in states that don’t have smog checks. The fail points on modern cars are almost their demise when they are not discovered by the ECM, that valve being one especially when it comes to a fuel trim problem...
Hey back again. Just went outside and checked the wiring connection to the purge valve and bang its working correctly. Loose connection. Thank you for that comment you said about wiring in this video made me check it again to be sure.😁👍👍
I had P0441 "incorrect flow" INTERMITENT :) No check engine lights. There was also underboost P0299, both solved with changing the purge valve - 06H906517AA. Car is much smoother, cold idles are not rough, no missfires, and the car does not stink like hell started cold like it was before.
Charles thank you for the info. I have a cracked plastic tube on the purge valve line. Do you suggest gluing, wrapping with tape or replacement of the whole hose? Thank you.
We have experienced on a 2005 Boxster 987 We cannot add fuel to the car, without any errors shown, I believe this is the same many issue have but don’t understand what’s causing it. We are ordering and replacing the part. We will update going forward 12/14/22
Thank you Charles! I watched this video a long time ago but my gti just started having a small evap leak and a system lean with up and down idle rpm and it brought me back here. Gonna replace my n80 and cross my fingers!
We had an issue with an polo vivo 2010 model not starting on hot days standing outside...my boss recommend to block off valve with an ball bearing in the inside? No fault codes and vehicle start every time....is it possibly hurting something ells? Just curious otherwise it works
I'm pretty sure the purge valve on my MK6 GTI is going out. I hear a ticking, the same one from a Deutsche Auto Parts video. But, I have no engine light.
Thank you for the video. My car would have a hard time starting after I filled it up and had no codes. Today I replaced the purge valve. Right after, I took the car for a test drive and notice my car was idling too low when in drive at a stop light. Can you think why this is happening? Thank you
This was helpful, my 2014 Jetta is having this issue, but will it also cause the car not to start for about 30 at a time randomly? Or could that be another issue? Any help would be greatly appreciated
i pulled a vacuum on this n80 valve from the TB connection and i pulled 30" and it decayed to 5" in a minute so i wonder if that might be my p0171. i did a vacuum test at the TB by taking that n80 hose off and i had 19" of vacuum so i'm wondering if this little bit of decay will cause that p0171 code to set? the maf was .01 at idle 700 rpms if that is normal? and .02 at 1500 and .3 at 2000 rpms so that checked out with a known good 2016 chrylser that it's maf had the same readings at the same rpms. thanks
Thank You! I've been chasing a fuel rich/intermittent boost issue that was compounded by a bad temp sensor on my wife's MK1 TT for months now. It's one of those multiple problems manifesting with odd issues. I watched your video, took my N80 valve off in about 2 min gave it a sharp tap on the table and voila, gobs of powdery crap. I'm not sure if swapping it out will solve all the issues I'm having, but I'm confident the blockage is at least a compounding variable. Thanks again!
This video is a gold!! So much useful information is shared in such a short period of time! All is clear, gives nice recommendations and explains potential problems caused by the failed purge valve. I do get several errors from the OBD tool, which I am leaned to connected with this failed part. Will give it DIY try. Thank you so much for the video, @HumbleMechanic!
I have a 2001 Volkswagen cabrio with a 2.0 later and it has a stall issue when it goes up a hill under load I put new oxygen sensors and every new part I can think of except the evap or vct sensor constantly tick on right fire wall aba engine thanks
I don't have a check engine light, and the OBD diagnosis doesn't show any faults, but my fuel tank keeps building up pressure so much that it starts venting even when closed. I found the tank door popped open with the tank venting after an hour or so of driving. is this a valve issue or a charcoal canister issue? or is it something else?
Will replacing this part in my 08 gti fix the fuel cap light that comes on randomly and seldomly? I have yet to get a CEL along with the fuel cap light though. My fuel cap is new from the dealer which helped reduce the frequency of the fuel cap light coming on. Any advice will be appreciated!
Hi Charles from Australia. If you had a faulty purge valve that is stuck open and you have over filled your tank, could this create a situation where liquid fuel could be sucked into the manifold and then create an oil dilution situation as to excess fuel being drawn into the combustion chamber? Cheers Jeremy
Could a secondary injection fault code be because of this? It also says incorrect air flow on the code. I dont have a fancy scanner to tell where exactly the problem is.
Could this also cause a back up of fuel vapour, in effect filling the charcoal canister with fuel and in turn give you a fuel leak from an over flow pipe off the charcoal canister?
@@Ponskippa No worries for the late reply. I had a right mess about about with this problem. In the end, I put it down to the new E10 fuel affecting the internals of the fuel filter. Changed that (after changing the charcoal cannister too) and switched to E5 (as recommended for my Audi). Been good since.
@@AutoFlexMediaUK I’ve been using mostly “no ethanol” fuel in my VW GTI and mine failed. I found online that the 2015 GTIs had a recall over a part called a suction pump inside of the gas tank that fails and leads to problems with evap and purge valve. Along with misfires. My car was returned to me yesterday and i still am having problems. Taking it back today. What a headache.
@@Ponskippa I had a load of problems at once. Noisy tappets, noisy rear chain, misfire at 5000rpm. Cat fault, o2 sensor faults. Ended up taking the head off, getting it skimmed etc, renewed all the tappets and rear chain unit, new haed gasket obviously, new cat and new o2 sensors. Then it developed a problem with fueling, when they introduced E10, kept coming up with "cat threshold" code and started leaking fuel from the overflow on the charcoal cannister. So I figured that the charcoal cannister being full of fuel, that the N80 valve was pulling through fuel, not just vapour. Changed the charcoal cannister, which was drenched with fuel, but it kept happening, leaking out and fault code kept coming back. Did a bit of digging on E10 and found out the effects it has on plastics, rubbers and aluminium. So I worked out that the one thing that I hadn't thought of, because I only changed it a few months before, was the fuel filter. It's the one with 4 pipes on it, for the evap system. So it must of warped the inside of the filter and was pulling fuel in too much. Anyway, I changed the filter, and the cat again, went over to E5 Super Unleaded and it cured the problem. Then about 2 months later, a load of vac pipes under the manifold started splitting and leaking air, so had to short all that out too. Lol.
so weird... a friend contacted me today on Facebook about his car problem.. his gas cap light kept coming on. he replaced his fuel cap with no luck. after searching around, i learned about this part. i told him to try it first, as its pretty cheap.
I have a '99 Expedition and the evap service port says no more than 1 psi. I don't know if you're familiar with that system. I keep hearing apply 15 psi using a pump. Can you suggest anything please? I get a P442 code. Thanks.
wondering on my 1.4 19 jetta, could this be my problem with fueling up? It shut of with less then a 1/2 gallon i put in? didnt have a cel until i took off vapor leak detection pump also seen something about suction pump at bottom of fuel tank....any ideas?
I just had this part replaced on my '13 Jetta Treadline, are you saying it is not a good idea to fill the tank in any case like mine or just if you have a fault?
have you ever seen one of these cause a crank start issue? I have a 2002 Cabrio that has fuel pressure but the injectors aren't getting a signal from the ECM. I have replaced the fuel pump relay and the crank sensor. I have good spark, and fuel pressure, but it won't fire unless I introduce fuel directly to the intake. I'm getting a P0445, and a P2441 as well as P0418 and codes for injector circuits 1-4 "low".
We have a 2019 VW Atlas SE V6. The charcoal canister has failed 5 times thus far. Frequency of failure has increased the last several times. Last two failures have occurred in under 2 months and have affected the entire fuel system, requiring replacement of fuel lines and tank. Yes, this vehicle is currently in its 3rd gas tank. The original and 2 replacements. VW cannot find any faults when the car shows signs of canister failure. Only visual inspection reveals the canister is bad. They are unable to find the root cause of the continuous failure. My question, is there a way to find out why or what keeps causing the charcoal canister to fail? Or, are there more common causes of failures that VW is overlooking? We have been told that it’s a “known issue” with the atlas, but I can’t find anything online as reference. User error has been ruled out. It was not caused by overfilling or otherwise. Any suggestions…
@humbleMechanic is it possible for N8O to fail without check engine light turned on? I got some paint smell from the exhaust, don't know if this is relative...
Hey man! I have a P0459 evap short to ground and a Evap Circuit high codes.... replaced my evap purge valve just on the off chance but no fix.... any ideas??
Is this why everytime I fill my car I have trouble starting my car? I have to pump the gas to get the car to start so is this an indication of a bad evap?
Yes, I just replaced my purge valve after my car was having trouble starting after getting gas and it works perfectly fine now! I had the same issue as you are having and this fixed it I have a 2012 Jetta
2 questions... Is there any way to clean this valve... lets say with carburetor cleaner for example ??? If you look inside it has something like a screw... what does this "screw" do ???
very informative, working on a 2007 a4...looked at the famous n80 valve but the culprit ended up being the leak detection pump...when testing between terminals 1 and 2 there was no continuity. thanks!
My GTI do the same. Exhaust doesn’t sound constantly bop bop bop It has fluctuations. And when you are sit or touch the engine you can feel little movements like spasms
Just getting p1425 which seems electric but thinking if I should just replace whole thing. Gas gauge is reading empty so not sure if its correlated or not. Great video though! (B5s4)
Hi from the UK. I have a Mk7.5 1.5 tsi DSG with 6000 miles on the clock. Would you know if my engine has this purge valve? My car mainly when cold (bucks) under light load.
Appreciate this is was posted 6 years ago but very applicable now. I have 2011 Fabia TSI that has a fault when at running temperature in "coughs" intermittently at from about 1200 rpm in 4th and 5th gear, and has produced no fault codes. I have a general engine analyser that is showing 630psi on the fuel rail and goes up to in excess of 1500psi when driving. I can't get hold of what the fuel rail pressure should be. I currently working through the fuel system cleaning and checking sensors. I've just disconnected this sensor and there's no fault code shown. Any ideas, and what the fuel rail pressure should be? Thanks for the video, it's good so I've subscribed.
I have two errors on my 2007 Passat. PO455 and PO171. These both pint, per your video to the N80 failure. I am curious if needing to replace the N80 would this in general require a Cannister replacement? And though DIY, if typically it opens a can of worms, is it still better to take it to a shop? It will throw these codes on acceleration and it is very difficult to start after putting gas into the tank.
Replaced it after getting the Evap System Check Engine Light; everything was fine for about 50 km (city driving), after which the CEL was back for the same reason What should I focus on next? Car is a VW Golf 5 GTI Edition 30 (Engine Code BYD)
I have a fuel leak coming from the charcoal canister area, and to release the built up pressure in the tank o remove the gas cap, and there is a hissing sound and it will leak out the remaining raw fuel. Could the purge valve cause a build up of pressure? Causing the canister to leak?
I have a 2000 B5 Passat and noticed the 1.8t N80 (0280142300) does not have the small filter but the 2.8 V6 N80 (0280142308) does have the filter. Any reason why Bosch would put a filter in one and not the other?
Mr humble mechanic I have a problem with the purge valve I put a new one in the arrow facing forward I still get check engine light but it does not show a code most of the time if I drive it a little further like 20 or 30 mi then I can get a code and clear it so I'm not sure what it is it could be the charcoal canisters wet I have to get underneath the wheel well and take it out to be able to find that out I change the fuel filter but I keep getting incorrect purge flow evap? Can you help me with this a little bit in detail?
I have a 98 VW GTI VR6, I can't find the culprit of the P1426 code, I reaserched forums and keep going in circles. EVAP purge valve (n80), tank vent, cas cap. I've replaced all of these already to no avail. emission test results DTC P1426 Manufacturer controlled auxiliary emissions. Going to check wiring from purge valve to ECU continuity tomorrow! wish me luck :)
+Curtis Smith And I read online that it takes a drive cycle to clear p1426 as it reappears in the ECU if you don't do that. I could be wrong but that take time and is kinda weird so no telling if i fixed anything yet after replacing parts?
Any videos of replacing The Whole evap n80 purge valve with factory lines to the intake without removal of intake and cutting it into Existing lines 2011 mk6 gti
Hi,iv got a golf gti mk5,I’ve changed my N80 valve my charcoal canister but if I use my OEM petrol cap and drive a few miles and open the petrol cap I’ll get lots of blocked gases and a sound like the petrol tank has just expanded so iv got to drive with a universal smaller petrol cap to let the gases out,do you have any advice? Iv been told iv got to drop the talk to unblock the pipes that run along side the petrol talk as there blocked 🤷♂️
In my TT there is an EVAP vacuum canister next to the N80 solenoid. Why is there a vacuum canister there? A lot of people on VW/Audi forums "delete" the vacuum canister and hoses going to the intake. Will this cause any damage to the car like, saturating the charcoal canister for example?
I'm just about a minute and a half into this video and you made me feel crazy old! LOL! you mentioned the "Way Old 1551" ! When I was a tech at VW, that was our scan tool. Ha Ha Ha! I always like your videos. Thanks for making them. Since I've been out of the tech game since 2000, you help me with repairs I do at home. Cheers!
There isn't a diaphram in this device. It's a solenoid operated valve. When I was replacing the fuel injectors, I apparently broke some carbon deposits loose in the device or in the lines. These small bits prevented the valve from seating and caused the computer to report an evap leak (P0455). After cleaning the valve with some choke cleaner, and cycling the solenoid a few times with a 12v supply, the valve started working normaly. You can test if the valve is leaking just by blowing thru the tube on the end by the electrical connector. If it leaks you can blow through it. When it's working OK you can't.
Question, my Jetta had the fuel rail bolt recall. I wasn’t notified so didn’t know and turns out my car has been leaking fuel for a while. A few weeks ago it started dumping fuel while driving down the expressway. Had it towed to the dealer, they “fixed it” but now I have an active CEL with EVAP flow. Would the fuel leak cause this to go bad?
I had this happen on my rabbit and it unfortunately did damage to the fuel pump, purge valve, gas tank, and the charcoal canister. I never got a check engine light, I found out because every time I went to fuel up it would only pump a half gallon or so before foaming up the filler neck and shutting the fuel nozzle off. Do you have any recommendation on checking the filler neck check valve to make sure it is open? I think this same issue may be happening on my mk5 Jetta now.
Forgive my lack of knowledge but would this cause the pump to keep shutting off or would the be from a clogged evap hose or something? I have a 99 passat with the 20v 1.8t
Charles, I have a Skoda Superb with the VW 1.8TSi engine. If I put my finger over the end of the pipe that goes to the purge canister I can feel a constant ticking of suction from the valve, should it run constantly or cycle on/off intermittently? I figure the valve is ok and I'm tempted to change the canister, car has done 73k miles. I'd appreciate your thoughts.
just replaced my n80 valve 20 minutes no more hard starts after fuel fill ..tnx bro
I had a P0171: System Too Lean (Bank 1) that I had been chasing for 3 months and after spending close to $445 on various parts, the problem was with this purge valve that fixed the loss of power and lean code issues I was having...
My current issue plague me for months until I came across this video will install after I change the hose and canister hope it fixes the issue
Well that explains why my car is hard to start after getting fuel, mine was stuck open! Replaced it and no more CEL and it starts right up after fueling.
This video saved my ass as well for the same reason.
Hey Robert, just curious, do you remember what your CEL was? I'm trying to chase down a P0456 and I'm thinking about replacing this part. Just wanted to see if yours was the same. Thanks.
Thanks for this quick and useful overview of what the N80 is and does! Even for nonspecialists like me the Bentley vid is well worth watching at least through its full, animated description of what the entire evap system does. When they got to the part about how the N80 is _pulsed_ to control how much recovered vapor is routed back to contribute to combustion, I realized why your vid included a "not recommended as a test" label at the point when you mention just hitting the N80 with 12-V dc to listen for clicks.
About to be a lot of people watching this video again. 17 GTI, just got the recall noticed. Super informative video! Might be able to take care of this myself.
Your advice was awesome. After I topped off my gas tank, I couldn't get my car to start. It kept coughing..... Had you not mentioned "don't top off your fuel tank..." at the end of the video, I would have never made the connection.
Swahiliangift70x7 same here. My Jetta runs like a champ except when I fill up the tank. Awesome video very informative and easy DIY project!
@@parkerdm9636 I'm still confused so what run your car to e then fill it?
No, it means when you are filling past when the pump clicks off. Like dont try to make it to an even number.
Thanks for your generous efforts in educating the VW owners of the world . Look forward to future videos as a Gen 6 Golf owner .
This guy is so smart, he knows everything about VWs!!
Thank you! Far from knowing all things VW, but trying hard to learn all the time
@@HumbleMechanic You do KNOW EVERYTHING HM. I’ve never seeing u hesitate
@@themachine8009the beauty is, he really is the HUMBLE mechanic lol. He knows damn well everything there is to know about these cars.
I know this video is kinda old but if you are here for the P0456 small leak code. It is going to be your N80 purge valve its around $30 to $90. Usually Bosch is the best way to go. Dealership here in Texas charges about $400 w/tax. Have had this valve changed twice in 5yrs ownership at 46,xxx & now at 60,xxx.
I got a P0456 on my 2010 Audi Q5 replaced my gascap and the P0456 is back I just ordered a purge valve praying that this fixes it because I really don't want to hunt after the canister or the detection pump hoping that its the valve
can this also be why im getting super low mpg ?
@Chris Lantern did you find out?
Thanks Charles for showing how this value functions, it's a more detail explanation - than I got from the VW dealership!
Glad to help. :)
You probably dont care at all but does someone know of a way to log back into an instagram account??
I was dumb forgot my password. I would love any assistance you can offer me
@Kenzo Xzavier Instablaster =)
@Jake Issac Thanks so much for your reply. I found the site thru google and Im trying it out atm.
I see it takes quite some time so I will reply here later with my results.
@Jake Issac It did the trick and I now got access to my account again. I am so happy!
Thanks so much, you saved my account !
Could this cause a rough idle, and maybe throw a faulty throttle body code? I’ve had a shop try and do a relearn but it’s unable to do a throttle body relearn with a cel. Have already replaced throttle body.
Sup Charles...had a walnut shell cleaning which helped a lot with improved power...replaced a water pump on the 2013 CC which solved a bad leak.....now im getting a lean code...I cleaned the mass flow sensor ...the code came back on it was 2177
Im thinking from watching this vid its the purge valve...great breakdown I will get one today and let cha know!
Wonderful video. However, the canister does not have CHARCOAL in it. It has ACTIVATED CARBON which is completely different from CHARCOAL. Instead of filtering the fumes like charcoal would, the "activated" carbon ADSORBS the fumes (grabs the molecules and holds them onto the surface) of the carbon until there is room inside the fuel tank for the gas fumes. It is similar to magic but the bottom line is, it prevents the fumes from escaping to the atmosphere.
WARNING: When you fill your gas tank, do NOT keep clicking the pump to try to fill the fuel filler neck all the way to the top. You are risking getting too much liquid fuel in the system and if you saturate the "activated" carbon, you "de-activate" it. In other words you have killed it. Your CEL will come on and you will have to buy a new and very expensive carbon canister.
How do I know this? I retired from many years working as a production supervisor at a plant which makes this activated carbon.
Calm down old man
Just had mine replace on my 2019 Jetta with 24,000 miles. Strange thing is once it was replaced, along with a cracked line, it now runs better than it did when I first got it! Thinking that line was cracked from new. Pulling out in first the car has much more torque now. It was always just weird feeling starting out from a stop since it was new. Strange but it's much better now.
what kind of line was cracked? vacuum line?
Very helpful. I have a P0441 code (Incorrect purge flow) on a B5 A4 and was reading from a lot of sources that it could be the canister. I'm happier knowing about this part as one of these from bosch is about $40 as opposed to a $200+ Canister
My Golf had the same code, changed the N80 sensor and code cleared itself.
I HAVE LEARNED ALOT FROM CHARLES. I CAN TOTALLY UNDERSTAND WATCHING HIS VIDEOS, AND HE EXPLAINS VERY WELL. AWESOME! AND TO ME,,, THE BEST!
I had every one of those codes for the open... mine is on the way. Its a little tight on a beetle but seems simple enough to change.
I`m currently doing some work on a 2002 Passat GLS 1.8T. One of the complaints is the CEL is illuminated. Bit of back story; I worked on this car a couple months ago with the same "EVAP Very Small Leak" DTC. Spent way to much time diagnosing it and decided to let another friends shop who specializes in VW`s have a crack at it. They also couldn`t keep the CEL off, it would always turn back on. Recently the car was brought back for another go and I decided to check the Purge Valve. We verified that the solenoid is functioning. I applied 20" of vacuum and in 10 Min. the vacuum had dropped 10". I wasn`t sure if this was out of spec. Luckily my neighbor just happens to also have a B5. I performed the same test on his N80 Valve and in the same 10 min. vacuum only dropped 2". His car doesn`t have any DTC`s. I`m replacing the N80 tomorrow with a new OEM one. I`ll post an update as to whether the DTC comes back.
Did it help swapping in a new one. Takes me 10 minutes to fill gas tank. It fills a bit and gas comes out nozzle. Then repeats till full
I keep having issues with my MK7 Jetta. Taking it back to dealer for the 3rd time. First noticeable symptom for me is that my remote start won't work. CEL takes a few days to come on. I've used my VAGCOM to clear it a couple of time because I don't have time to have dealership deal with it, under warranty thankfully. But this is getting quite annoying. The new valve seems to have molded plastic tubes rather than rubber clamped tubing. I will have to ask them to check the charcoal canister this time around.
Hi what if you add a bartek resistor that cancels the purge solenoid? And its faults is that ok will the fuel trims get restored if everything else is in order? Please let me know
Question - can a failed purge valve cause gas fumes/smell to enter the cabin?
Had a one green check valve fail while checking the for boost leaks, that n80 valve would make a buzzing noise during 15psi boost leak check, best fix is to tune, and delete the problem entirely in states that don’t have smog checks. The fail points on modern cars are almost their demise when they are not discovered by the ECM, that valve being one especially when it comes to a fuel trim problem...
Hey back again. Just went outside and checked the wiring connection to the purge valve and bang its working correctly. Loose connection. Thank you for that comment you said about wiring in this video made me check it again to be sure.😁👍👍
Hi, is a broken fuel lid actuator on a VW Golf / GTE linked to the EVAP system? - making it difficult to fill the tank?
I had P0441 "incorrect flow" INTERMITENT :) No check engine lights. There was also underboost P0299, both solved with changing the purge valve - 06H906517AA. Car is much smoother, cold idles are not rough, no missfires, and the car does not stink like hell started cold like it was before.
Charles thank you for the info. I have a cracked plastic tube on the purge valve line. Do you suggest gluing, wrapping with tape or replacement of the whole hose? Thank you.
We have experienced on a 2005 Boxster 987 We cannot add fuel to the car, without any errors shown, I believe this is the same many issue have but don’t understand what’s causing it. We are ordering and replacing the part. We will update going forward 12/14/22
Can you tell me what causes a loud clicking noise from charcoal canister?
worry not unless you have a code. The computer super controls EVAPS all the time.
Thank you Charles! I watched this video a long time ago but my gti just started having a small evap leak and a system lean with up and down idle rpm and it brought me back here. Gonna replace my n80 and cross my fingers!
Hi, I have a 2020 GTI and having this issue. Do you remember what code it was throwing?
We had an issue with an polo vivo 2010 model not starting on hot days standing outside...my boss recommend to block off valve with an ball bearing in the inside? No fault codes and vehicle start every time....is it possibly hurting something ells? Just curious otherwise it works
I'm pretty sure the purge valve on my MK6 GTI is going out. I hear a ticking, the same one from a Deutsche Auto Parts video. But, I have no engine light.
Thank you for the video. My car would have a hard time starting after I filled it up and had no codes. Today I replaced the purge valve. Right after, I took the car for a test drive and notice my car was idling too low when in drive at a stop light. Can you think why this is happening? Thank you
This was helpful, my 2014 Jetta is having this issue, but will it also cause the car not to start for about 30 at a time randomly? Or could that be another issue? Any help would be greatly appreciated
This valve could turn on the EPC Light and the traction control and show an ESP failure? I have an Audi A6 3.2 2007
Do you have a vid on how to remove Evap valve on 2.0 TSI (200)
still a very helpfull video , this fixed my P0441 fault code on a VW Golf mk4
i pulled a vacuum on this n80 valve from the TB connection and i pulled 30" and it decayed to 5" in a minute so i wonder if that might be my p0171. i did a vacuum test at the TB by taking that n80 hose off and i had 19" of vacuum so i'm wondering if this little bit of decay will cause that p0171 code to set? the maf was .01 at idle 700 rpms if that is normal? and .02 at 1500 and .3 at 2000 rpms so that checked out with a known good 2016 chrylser that it's maf had the same readings at the same rpms. thanks
Can you get a p0160 code? Replaced MAP sensor but the issue came back after a week, when tsking the oil cap the car runs smooth
Thank You! I've been chasing a fuel rich/intermittent boost issue that was compounded by a bad temp sensor on my wife's MK1 TT for months now. It's one of those multiple problems manifesting with odd issues. I watched your video, took my N80 valve off in about 2 min gave it a sharp tap on the table and voila, gobs of powdery crap. I'm not sure if swapping it out will solve all the issues I'm having, but I'm confident the blockage is at least a compounding variable. Thanks again!
Did you fix this problem? I’ve got a mk1 tt and I’m finding it’s building up with pressure a lot in the fuel tank
I’m getting a P0448, vent control circuit shorted. How can I check if it’s shorted
This video is a gold!! So much useful information is shared in such a short period of time! All is clear, gives nice recommendations and explains potential problems caused by the failed purge valve. I do get several errors from the OBD tool, which I am leaned to connected with this failed part. Will give it DIY try.
Thank you so much for the video, @HumbleMechanic!
I have a 2001 Volkswagen cabrio with a 2.0 later and it has a stall issue when it goes up a hill under load I put new oxygen sensors and every new part I can think of except the evap or vct sensor constantly tick on right fire wall aba engine thanks
I have a 2013 beetle throwing a P2450 code Evaporative Emission System Switching Valve Performance/Stuck Open . Any suggestions?
I don't have a check engine light, and the OBD diagnosis doesn't show any faults, but my fuel tank keeps building up pressure so much that it starts venting even when closed. I found the tank door popped open with the tank venting after an hour or so of driving. is this a valve issue or a charcoal canister issue? or is it something else?
Will replacing this part in my 08 gti fix the fuel cap light that comes on randomly and seldomly? I have yet to get a CEL along with the fuel cap light though. My fuel cap is new from the dealer which helped reduce the frequency of the fuel cap light coming on. Any advice will be appreciated!
When you say stop topping off, sooo just fuel up to 3/4 give or take ?
Hi Charles from Australia.
If you had a faulty purge valve that is stuck open and you have over filled your tank, could this create a situation where liquid fuel could be sucked into the manifold and then create an oil dilution situation as to excess fuel being drawn into the combustion chamber?
Cheers
Jeremy
I have an 04 vw passat with P0456, can you drive on this temporarily until you get it replaced?
Could a secondary injection fault code be because of this? It also says incorrect air flow on the code. I dont have a fancy scanner to tell where exactly the problem is.
Could this also cause a back up of fuel vapour, in effect filling the charcoal canister with fuel and in turn give you a fuel leak from an over flow pipe off the charcoal canister?
Kind of late reply, but yes I think so. Just had a bunch of parts replaced on my GTI including the n80
@@Ponskippa No worries for the late reply. I had a right mess about about with this problem. In the end, I put it down to the new E10 fuel affecting the internals of the fuel filter. Changed that (after changing the charcoal cannister too) and switched to E5 (as recommended for my Audi). Been good since.
@@AutoFlexMediaUK I’ve been using mostly “no ethanol” fuel in my VW GTI and mine failed. I found online that the 2015 GTIs had a recall over a part called a suction pump inside of the gas tank that fails and leads to problems with evap and purge valve. Along with misfires. My car was returned to me yesterday and i still am having problems. Taking it back today. What a headache.
@@Ponskippa I had a load of problems at once. Noisy tappets, noisy rear chain, misfire at 5000rpm. Cat fault, o2 sensor faults. Ended up taking the head off, getting it skimmed etc, renewed all the tappets and rear chain unit, new haed gasket obviously, new cat and new o2 sensors. Then it developed a problem with fueling, when they introduced E10, kept coming up with "cat threshold" code and started leaking fuel from the overflow on the charcoal cannister. So I figured that the charcoal cannister being full of fuel, that the N80 valve was pulling through fuel, not just vapour. Changed the charcoal cannister, which was drenched with fuel, but it kept happening, leaking out and fault code kept coming back. Did a bit of digging on E10 and found out the effects it has on plastics, rubbers and aluminium. So I worked out that the one thing that I hadn't thought of, because I only changed it a few months before, was the fuel filter. It's the one with 4 pipes on it, for the evap system. So it must of warped the inside of the filter and was pulling fuel in too much. Anyway, I changed the filter, and the cat again, went over to E5 Super Unleaded and it cured the problem. Then about 2 months later, a load of vac pipes under the manifold started splitting and leaking air, so had to short all that out too. Lol.
What would cause p2024 on a c7 Audi with 3.0t, I changed the n80, leak detection pump and canister
so weird... a friend contacted me today on Facebook about his car problem.. his gas cap light kept coming on. he replaced his fuel cap with no luck. after searching around, i learned about this part. i told him to try it first, as its pretty cheap.
I have a '99 Expedition and the evap service port says no more than 1 psi. I don't know if you're familiar with that system. I keep hearing apply 15 psi using a pump. Can you suggest anything please? I get a P442 code. Thanks.
wondering on my 1.4 19 jetta, could this be my problem with fueling up? It shut of with less then a 1/2 gallon i put in? didnt have a cel until i took off vapor leak detection pump also seen something about suction pump at bottom of fuel tank....any ideas?
I just had this part replaced on my '13 Jetta Treadline, are you saying it is not a good idea to fill the tank in any case like mine or just if you have a fault?
Would this cause rpm fluctuations at a stop if the PCV valve/breather hose and intake manifold is good? 2010 GTI
have you ever seen one of these cause a crank start issue? I have a 2002 Cabrio that has fuel pressure but the injectors aren't getting a signal from the ECM. I have replaced the fuel pump relay and the crank sensor. I have good spark, and fuel pressure, but it won't fire unless I introduce fuel directly to the intake. I'm getting a P0445, and a P2441 as well as P0418 and codes for injector circuits 1-4 "low".
Great video is there anyway on the n80 purge valve for a Volkswagen Touareg you can show me the location where it is while looking over the motor.
I have a 2014 Jetta 2.0 Hybrid with a P0442 code, where is this part located on the Hybrid? Is it the same? Thx.
Your very informative,but you didn't tell me where it is on my 2005 VW Beetle. Thank you
i wouldlike to know much about the reason for unusual gear change in vw tiguan, kindly help me
We have a 2019 VW Atlas SE V6. The charcoal canister has failed 5 times thus far. Frequency of failure has increased the last several times. Last two failures have occurred in under 2 months and have affected the entire fuel system, requiring replacement of fuel lines and tank. Yes, this vehicle is currently in its 3rd gas tank. The original and 2 replacements. VW cannot find any faults when the car shows signs of canister failure. Only visual inspection reveals the canister is bad. They are unable to find the root cause of the continuous failure. My question, is there a way to find out why or what keeps causing the charcoal canister to fail? Or, are there more common causes of failures that VW is overlooking? We have been told that it’s a “known issue” with the atlas, but I can’t find anything online as reference. User error has been ruled out. It was not caused by overfilling or otherwise. Any suggestions…
How do you get the hoses off? I have a 2016 VW JETTA
@humbleMechanic is it possible for N8O to fail without check engine light turned on? I got some paint smell from the exhaust, don't know if this is relative...
Hey man! I have a P0459 evap short to ground and a Evap Circuit high codes.... replaced my evap purge valve just on the off chance but no fix.... any ideas??
Is this why everytime I fill my car I have trouble starting my car? I have to pump the gas to get the car to start so is this an indication of a bad evap?
Yes, I just replaced my purge valve after my car was having trouble starting after getting gas and it works perfectly fine now! I had the same issue as you are having and this fixed it I have a 2012 Jetta
@@157dodgers yep I replaced the purge valve and no more issues thank God!!
@@mikesaje37 nice! My car wouldn’t pass smog because of it, but now we are good to go 😤
2 questions...
Is there any way to clean this valve... lets say with carburetor cleaner for example ???
If you look inside it has something like a screw... what does this "screw" do ???
Sorry if this is a random question but, is it normal for a 2015 VW Jetta to suck air through the engine oil cap
Hi would this part fail on
Emissions as well mate
very informative, working on a 2007 a4...looked at the famous n80 valve but the culprit ended up being the leak detection pump...when testing between terminals 1 and 2 there was no continuity. thanks!
My GTI do the same. Exhaust doesn’t sound constantly bop bop bop It has fluctuations. And when you are sit or touch the engine you can feel little movements like spasms
HAVE YOU SORTED THIS YET? MY MK6 GTI DOES THIS
Just getting p1425 which seems electric but thinking if I should just replace whole thing. Gas gauge is reading empty so not sure if its correlated or not. Great video though! (B5s4)
what is the location of this part on a seat ibiza 2020 3 cyl ?/any idear pls under bonnet or under vehicle ??
Does that also cuz fuel injector offset learning at min limit issue code?
I dont think it would not directly anyway.
Hi from the UK. I have a Mk7.5 1.5 tsi DSG with 6000 miles on the clock. Would you know if my engine has this purge valve? My car mainly when cold (bucks) under light load.
Appreciate this is was posted 6 years ago but very applicable now. I have 2011 Fabia TSI that has a fault when at running temperature in "coughs" intermittently at from about 1200 rpm in 4th and 5th gear, and has produced no fault codes. I have a general engine analyser that is showing 630psi on the fuel rail and goes up to in excess of 1500psi when driving. I can't get hold of what the fuel rail pressure should be. I currently working through the fuel system cleaning and checking sensors. I've just disconnected this sensor and there's no fault code shown. Any ideas, and what the fuel rail pressure should be? Thanks for the video, it's good so I've subscribed.
I have two errors on my 2007 Passat. PO455 and PO171. These both pint, per your video to the N80 failure. I am curious if needing to replace the N80 would this in general require a Cannister replacement? And though DIY, if typically it opens a can of worms, is it still better to take it to a shop?
It will throw these codes on acceleration and it is very difficult to start after putting gas into the tank.
Replaced it after getting the Evap System Check Engine Light; everything was fine for about 50 km (city driving), after which the CEL was back for the same reason
What should I focus on next?
Car is a VW Golf 5 GTI Edition 30 (Engine Code BYD)
check the gas cap
I have a fuel leak coming from the charcoal canister area, and to release the built up pressure in the tank o remove the gas cap, and there is a hissing sound and it will leak out the remaining raw fuel. Could the purge valve cause a build up of pressure? Causing the canister to leak?
I have a 2000 B5 Passat and noticed the 1.8t N80 (0280142300) does not have the small filter but the 2.8 V6 N80 (0280142308) does have the filter. Any reason why Bosch would put a filter in one and not the other?
Mr humble mechanic I have a problem with the purge valve I put a new one in the arrow facing forward I still get check engine light but it does not show a code most of the time if I drive it a little further like 20 or 30 mi then I can get a code and clear it so I'm not sure what it is it could be the charcoal canisters wet I have to get underneath the wheel well and take it out to be able to find that out I change the fuel filter but I keep getting incorrect purge flow evap? Can you help me with this a little bit in detail?
Will the p0441 code cause the car to only hit 3000rpm and lower my top speed?
I have a 98 VW GTI VR6, I can't find the culprit of the P1426 code, I reaserched forums and keep going in circles. EVAP purge valve (n80), tank vent, cas cap. I've replaced all of these already to no avail. emission test results DTC P1426 Manufacturer controlled auxiliary emissions. Going to check wiring from purge valve to ECU continuity tomorrow! wish me luck :)
+Curtis Smith And I read online that it takes a drive cycle to clear p1426 as it reappears in the ECU if you don't do that. I could be wrong but that take time and is kinda weird so no telling if i fixed anything yet after replacing parts?
Any videos of replacing The Whole evap n80 purge valve with factory lines to the intake without removal of intake and cutting it into Existing lines 2011 mk6 gti
Would this cause high idle at stop? I got 0442 0446 0507 0171 after changing spark plugs. No bueno
Hi,iv got a golf gti mk5,I’ve changed my N80 valve my charcoal canister but if I use my OEM petrol cap and drive a few miles and open the petrol cap I’ll get lots of blocked gases and a sound like the petrol tank has just expanded so iv got to drive with a universal smaller petrol cap to let the gases out,do you have any advice? Iv been told iv got to drop the talk to unblock the pipes that run along side the petrol talk as there blocked 🤷♂️
In my TT there is an EVAP vacuum canister next to the N80 solenoid. Why is there a vacuum canister there? A lot of people on VW/Audi forums "delete" the vacuum canister and hoses going to the intake. Will this cause any damage to the car like, saturating the charcoal canister for example?
Should the purge valve have suction on the bottom hose connection.
I'm just about a minute and a half into this video and you made me feel crazy old! LOL! you mentioned the "Way Old 1551" ! When I was a tech at VW, that was our scan tool. Ha Ha Ha! I always like your videos. Thanks for making them. Since I've been out of the tech game since 2000, you help me with repairs I do at home. Cheers!
There isn't a diaphram in this device. It's a solenoid operated valve. When I was replacing the fuel injectors, I apparently broke some carbon deposits loose in the device or in the lines. These small bits prevented the valve from seating and caused the computer to report an evap leak (P0455). After cleaning the valve with some choke cleaner, and cycling the solenoid a few times with a 12v supply, the valve started working normaly. You can test if the valve is leaking just by blowing thru the tube on the end by the electrical connector. If it leaks you can blow through it. When it's working OK you can't.
Question, my Jetta had the fuel rail bolt recall. I wasn’t notified so didn’t know and turns out my car has been leaking fuel for a while. A few weeks ago it started dumping fuel while driving down the expressway. Had it towed to the dealer, they “fixed it” but now I have an active CEL with EVAP flow. Would the fuel leak cause this to go bad?
I replaced old one oem that was doing some ticking noise with new Bosch one and.. got P0441 error lol
Is it also used on TDI?
I had this happen on my rabbit and it unfortunately did damage to the fuel pump, purge valve, gas tank, and the charcoal canister. I never got a check engine light, I found out because every time I went to fuel up it would only pump a half gallon or so before foaming up the filler neck and shutting the fuel nozzle off. Do you have any recommendation on checking the filler neck check valve to make sure it is open? I think this same issue may be happening on my mk5 Jetta now.
Hi everyone
After change it, is possible the engine getting to work temperature faster than it was before ?
Grettings
Forgive my lack of knowledge but would this cause the pump to keep shutting off or would the be from a clogged evap hose or something? I have a 99 passat with the 20v 1.8t
Charles, I have a Skoda Superb with the VW 1.8TSi engine. If I put my finger over the end of the pipe that goes to the purge canister I can feel a constant ticking of suction from the valve, should it run constantly or cycle on/off intermittently? I figure the valve is ok and I'm tempted to change the canister, car has done 73k miles. I'd appreciate your thoughts.
Would that make the rpm go up and down if that failed ?
2007 VW Passat Wagon 2.0T ....codes are P0171 (twice P0171), P2181, P0441 ....is this likely the part discussed in this video?
Could you guys do a video on where the charcoal canister is??