Excellent video on diagnosing and figuring out this issue. I never knew about the green plug. That was super helpful. And the ohm readings were also very helpful. You should post this on the Subaru outback forum
My brother, you should have a LOT more than 389 subscribers. Sincere gratitude from this viewer on CZcams, and probably my friend who has the same vehicle at a "dealership" who wants to "replace the system" for a thousand dollars, "because.." they don't diagnose vehicle's any further than "tested, audibly functioning" at a hundred bucks an hour flat-rate? I never wrenched professionally, more of a managerial/customer-service type with Swedish cars, but damn. I know ridiculous when I hear it, and taking a grand from a "little old lady" whose technical skills begin and end at turning hot or cold water on and off at her kitchen-sink is just %$&#ing rude, and borderline thievery.
Well the pump kicking off is without a doubt a ventilation issue. You may want to have the other valves checked in the area. Without proper ventilation the gasoline can't displace the air in the tank, which in turns causes pressure to build which kicks off the gas pump. Something isn't working right or is hooked up wrong.
The vent valve on top of the gas tank could definitely be the issue. If it isn't venting then all you're doing at the gas pump is filling up the filler neck over and over. Dropping the gas tank is a large undertaking on this vehicle so make sure your mechanic has checked everything before you ok the tank removal. Sorry I can't be of more direct assistance, some issues can only be fixed with hands on diagnostics.
awesome ! diagnosis and explanation. i didnt understand how this could effect performace or idle until you said that it was pressurized from vacuum. iam like, why my sub' running like ass it just has a stoopid vent valve code . but it is acting exactly like a vacuum like !!
There are many reports of issues connecting a scan tool to the ODBII port on an older Subaru. Apparently the pins start to get pushed out of optimal position inside the plastic that is the port. On any given day, my scan tool might not connect to the ECU on my 2001 Forester.
i got my vent valve replaced and still have the code popping up. i'm afraid that my purge valve also needs to be replaced from what i've been reading online. the purge valve is near the engine bay and the wording is very similar to the vent valve online in terms of shopping for parts.
thanks you have solved a problem I had... when just turning the car on i heard everything recycling didnt know what it was till you showed me the plug used for testing.. I guess the last mechanic that worked on it never unpluged it.. ..question leaving that plugged in for an extended period of time will it cause a problem
Thanks for video; I appreciate. 1. You did not mention year for car. Is this important, due to modifications? 2. I was told at the Subaru Dealer here in Brampton, Canada, that the scanner they recommend is the one that carries Subaru's software (I believe that to be b.s., but, anyway...). What's the difference to YOUR scanner? 3. How can resistance characteristics 'decay' in a solenoid?? Their Henrys should always be leveled to their individual resistance, shouldn't they? Possibly the diaphragm is not seating right, and allowing vacuum to leak, instead?
As far as the resistance "decaying": We do not know what the resistance was at the time of manufacture, so It may have been faulty from the get go. The real issue here is that he is not getting a proper seal. The sensor check is performed with the solenoid in the closed position (powered on) and is measuring the vacuum, so not sealing will throw this off and cause an error code.
So I have 2003 Subaru impreza and I got the error code p1443. And I'm having issues gasing up leaving the pump automatically keeps clicking off even when I hold the handle?
If the gas pump is clicking off it means you have a blockage in the evap line going into or out of the charcoal canister. This can also be caused by the evap solenoid failing in the closed position. Either of these scenarios will cause the p1443
I have a 2014 Subaru crosstrek limited. Have code P1449 ( vent control filter clogging ). I replace OEM. filter with solenoid, Auto zone Vapor canister Purge solenoid, and OEM. drain valve, after that smoke test ( no leak ) and blow to tubes. After drove the car for 20 miles or less. The same code came back. What next step I should check.
awesome and thorough vid! sadly I changed the vent valve and and my mechanic also changed the filler neck and said he checked the surrounding pipes and hoses around the canister for debris/clogs and he said they seemed okay. I still have the same exact problem, so I've sort of hit a dead end :-/
HI, I have the same issue as 'downtowndusky' and have replaced the same solenoid as in the video - no luck. I've also replaced the charcoal canister. blew out the lines and cleaned out the Drain Filter. Still not fixed. Hoping I don't have to drop the gas tank...but running out of options. Thanks
you may want to check the purge valve underneath the intake. Subaru parts calls it a duty solenoid. you can check it the same way as the drain valve. this will also set the same dtc. I have had several foresters with this dtc and a faulty purge vavle, and does not set a purge valve dtc just a p1443.
Mike Bomgardner Thanks for the reply. Forgot about this post. Yep that's how I fixed it: www.ultimatesubaru.org/forum/topic/142640-p1443-cel-code-evap-system-fix/ My fix was to replace Purge Valve control solenoid, P/N: 16102AA080 Thanks
What if I cant hear the relay when I plug the green cable.......and when Im filling my gas tank it keeps stoping constantly im filling my gas tank for like 30 minutes .....I just right now check the charcoal canister and the two little hose (the ones closest to the bottom) where filled up with charcoal waa that the problem
I was wondering if you knew what a P0448 would mean then? Is that usually the valve that is in the engine bay that will direct the vapors into the intake manifold?
I have a 2010 Impreza and this happened years ago....was broke and couldnt afford to get it fixed. Reset the battery, went away....kinda forgot about it.....but last night before work it came back. Traction, cruise and check engine. How pricey is this to fix? I have heard $60-250......i paid my car off and i really dont wanna get a new one anytime soon.....any help would work. Cant afford a dealer that will charge $$$ but some local yocal may not know what the hell EVAP is. Thanks.
thanks for the reply! Someone was saying something about a "vent valve" or something on top of the gas tank itself which could be clogged and doesn't open up anymore? They were saying this is something that requires dropping the tank. could it be the problem? I do have the P1443 code and a diagnostic receipt said: open or short circ. condition, poor elec. connection, or failed vent ctrl solenoid. Could you tell me specifically what faulty parts/components these could be referring to? Thank you
Hi Kevin, thanks for the video and offering to answer questions. I've got one, regarding my approach to solving the fuel smell on my recently-purchased 2004 Forester. I have some ideas since the smell is most prevalent just after a fill up with the tank is completely full. I plan on going under there to check it out. I suspect its either a rusted tank (at the top) or the filler neck. Is there any other venting issues that may showup only when the tank is full? any help is appreciated.
I got same code (P1443-EVAP VENT CONTROL SOLENOID RANGE)... do you think, same solenoid is the culprit? BTW, my vehicle is 1998 subaru forester. thanks.
I have this code on a 99 impreza outback sport. its hard to start and idles rough only after I get gas. once underway it runs and will start fine. am I on the right track after watching your video?
Never knew about that green test connector. Thanks a lot! Very good video.
Excellent video on diagnosing and figuring out this issue. I never knew about the green plug. That was super helpful. And the ohm readings were also very helpful. You should post this on the Subaru outback forum
Didn't know about the ohms test. Great info, quick and to the point. Thanks. You just saved me $125 diagnostic and labour at the shop.
A cheap and useful tool for evap testing, a basic balloon. Quickly check if solenoid is leaking doing the blow test, no guessing.
Good job Jay. Pretty short video, getting right to the point. I love using the test connector. 🙂
My brother, you should have a LOT more than 389 subscribers. Sincere gratitude from this viewer on CZcams, and probably my friend who has the same vehicle at a "dealership" who wants to "replace the system" for a thousand dollars, "because.." they don't diagnose vehicle's any further than "tested, audibly functioning" at a hundred bucks an hour flat-rate?
I never wrenched professionally, more of a managerial/customer-service type with Swedish cars, but damn. I know ridiculous when I hear it, and taking a grand from a "little old lady" whose technical skills begin and end at turning hot or cold water on and off at her kitchen-sink is just %$&#ing rude, and borderline thievery.
Well the pump kicking off is without a doubt a ventilation issue. You may want to have the other valves checked in the area. Without proper ventilation the gasoline can't displace the air in the tank, which in turns causes pressure to build which kicks off the gas pump. Something isn't working right or is hooked up wrong.
I know this vid is now old, but very helpful. Thank you!!
The vent valve on top of the gas tank could definitely be the issue. If it isn't venting then all you're doing at the gas pump is filling up the filler neck over and over. Dropping the gas tank is a large undertaking on this vehicle so make sure your mechanic has checked everything before you ok the tank removal. Sorry I can't be of more direct assistance, some issues can only be fixed with hands on diagnostics.
awesome ! diagnosis and explanation.
i didnt understand how this could effect performace or idle until you said that it was pressurized from vacuum.
iam like, why my sub' running like ass it just has a stoopid vent valve code .
but it is acting exactly like a vacuum like !!
There are many reports of issues connecting a scan tool to the ODBII port on an older Subaru. Apparently the pins start to get pushed out of optimal position inside the plastic that is the port. On any given day, my scan tool might not connect to the ECU on my 2001 Forester.
Very helpful. Good start to point me in the correct direction for diagnosis
Should have shown us the test you conducted on the old part, onto the new part to compare readings
Excellent. Clear and concise.
Great video. Right to the point no BS. Good work.
Very good info. need to check 08 forester and this was VERY helpful. Thank you.
You sir, are a champion. Very informative!
Nice video, thanks for being clear and very easy to understand.
Great video, it showed me exactly what I needed to know!
I think I'm having a similar problem with my Subaru which threw a P0457 so I'm gonna run some similar tests. Thanks for your video.
My car has only 29K. miles. Old filter, lines tubes are clean.
Great video.
great video, thank you!
i got my vent valve replaced and still have the code popping up. i'm afraid that my purge valve also needs to be replaced from what i've been reading online. the purge valve is near the engine bay and the wording is very similar to the vent valve online in terms of shopping for parts.
Very informative! Just exactly what I needed. Thanks!
thanks you have solved a problem I had... when just turning the car on i heard everything recycling didnt know what it was till you showed me the plug used for testing.. I guess the last mechanic that worked on it never unpluged it.. ..question leaving that plugged in for an extended period of time will it cause a problem
Thanks for video; I appreciate. 1. You did not mention year for car. Is this important, due to modifications? 2. I was told at the Subaru Dealer here in Brampton, Canada, that the scanner they recommend is the one that carries Subaru's software (I believe that to be b.s., but, anyway...). What's the difference to YOUR scanner? 3. How can resistance characteristics 'decay' in a solenoid?? Their Henrys should always be leveled to their individual resistance, shouldn't they? Possibly the diaphragm is not seating right, and allowing vacuum to leak, instead?
As far as the resistance "decaying": We do not know what the resistance was at the time of manufacture, so It may have been faulty from the get go. The real issue here is that he is not getting a proper seal. The sensor check is performed with the solenoid in the closed position (powered on) and is measuring the vacuum, so not sealing will throw this off and cause an error code.
thanks!! very informative and helpful
Great video, seriously amazing
So I have 2003 Subaru impreza and I got the error code p1443. And I'm having issues gasing up leaving the pump automatically keeps clicking off even when I hold the handle?
If the gas pump is clicking off it means you have a blockage in the evap line going into or out of the charcoal canister. This can also be caused by the evap solenoid failing in the closed position. Either of these scenarios will cause the p1443
I have a 2014 Subaru crosstrek limited. Have code P1449 ( vent control filter clogging ). I replace OEM. filter with solenoid, Auto zone Vapor canister Purge solenoid, and OEM. drain valve, after that smoke test ( no leak ) and blow to tubes. After drove the car for 20 miles or less. The same code came back. What next step I should check.
awesome and thorough vid! sadly I changed the vent valve and and my mechanic also changed the filler neck and said he checked the surrounding pipes and hoses around the canister for debris/clogs and he said they seemed okay. I still have the same exact problem, so I've sort of hit a dead end :-/
Subaru calls the canister vent solenoid valve a "drain valve". They refer to a vent valve that is on top of fuel tank.
HI. Why smell gasoline when I filled up the gas tank. Tanks for your help.
HI,
I have the same issue as 'downtowndusky' and have replaced the same solenoid as in the video - no luck. I've also replaced the charcoal canister. blew out the lines and cleaned out the Drain Filter. Still not fixed.
Hoping I don't have to drop the gas tank...but running out of options.
Thanks
you may want to check the purge valve underneath the intake. Subaru parts calls it a duty solenoid. you can check it the same way as the drain valve. this will also set the same dtc. I have had several foresters with this dtc and a faulty purge vavle, and does not set a purge valve dtc just a p1443.
Mike Bomgardner
Thanks for the reply. Forgot about this post. Yep that's how I fixed it:
www.ultimatesubaru.org/forum/topic/142640-p1443-cel-code-evap-system-fix/
My fix was to replace Purge Valve control solenoid, P/N: 16102AA080
Thanks
What if I cant hear the relay when I plug the green cable.......and when Im filling my gas tank it keeps stoping constantly im filling my gas tank for like 30 minutes .....I just right now check the charcoal canister and the two little hose (the ones closest to the bottom) where filled up with charcoal waa that the problem
Thanks for posting this !
I was wondering if you knew what a P0448 would mean then? Is that usually the valve that is in the engine bay that will direct the vapors into the intake manifold?
I liked your video it was very helpful
I have a 2010 Impreza and this happened years ago....was broke and couldnt afford to get it fixed. Reset the battery, went away....kinda forgot about it.....but last night before work it came back. Traction, cruise and check engine. How pricey is this to fix? I have heard $60-250......i paid my car off and i really dont wanna get a new one anytime soon.....any help would work. Cant afford a dealer that will charge $$$ but some local yocal may not know what the hell EVAP is. Thanks.
Great Video. Thanks for the information man!
super helpful video. thanks for sharing
Thank you very helpful
thanks for the reply! Someone was saying something about a "vent valve" or something on top of the gas tank itself which could be clogged and doesn't open up anymore? They were saying this is something that requires dropping the tank. could it be the problem? I do have the P1443 code and a diagnostic receipt said: open or short circ. condition, poor elec. connection, or failed vent ctrl solenoid. Could you tell me specifically what faulty parts/components these could be referring to? Thank you
Hi Kevin, thanks for the video and offering to answer questions. I've got one, regarding my approach to solving the fuel smell on my recently-purchased 2004 Forester. I have some ideas since the smell is most prevalent just after a fill up with the tank is completely full.
I plan on going under there to check it out. I suspect its either a rusted tank (at the top) or the filler neck. Is there any other venting issues that may showup only when the tank is full? any help is appreciated.
Do you know where the control solenoid is on a 05 forester. Under the hood or at the rear of the vehicle
Will doing this reset my Cobb tune?
great video... I wonder if it's the same on a 2005 impreza 2.5rs? I'm getting a p1446
What to do or replace if I have a code po456 ( evap system very small leak detected) on a 2007 subaru impreza 2.5 sedan? Thank you!
start by getting new gas cap from stealership (genuine OEM), then try smoking evap for leaks
I wish I could do all this in 6 minutes!
nice video
my 2002 impreza 2.5rs is throwing a p1446. is it related to this at all? or a simple fix?
I got same code (P1443-EVAP VENT CONTROL SOLENOID RANGE)... do you think, same solenoid is the culprit? BTW, my vehicle is 1998 subaru forester. thanks.
+Alejandro Cea I would check to make sure that it is plugged in. Chances are that it is the solenoid.
I have this code on a 99 impreza outback sport. its hard to start and idles rough only after I get gas. once underway it runs and will start fine. am I on the right track after watching your video?
Got a 02 forester throwing 2 codes (p0456 p0442) wonder if that would fix those code too
2006 subaru sti with evap po448 unable to clear
Fucking genius
heyy i geting a p0442 is it the same as po443
There is no such green connector on my 2012 Subaru Forester.