purge and vent valves:
such things usually make a check engine code,

on rare occasions over many years with various cars I have had problems filling. never did anything to fix it. as it just went away on its own.

suggestion for the short term. slower filling (as you are probably doing). or picking a different gas station.

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you can check for codes like this on a US spec 2005, if one ever crops up. (may take a couple tries to work,...but works better then hand helds).

https://www.subaruoutback.org/forum...5-2009/19053-05-06-09-how-read-diagnostic-trouble-codes-dtcs-2.html#post4461042

 

scan for pending codes.

clogged evap system hose or valve is quite likely.

if the car sits unused for lengths of time, maybe some type of fuel treatment would remove some gummy deposits? seafoam or techron or ?

 

The symptom described can happen when the purge valve, which is supposed to be closed when the engine is off, remains open or at least has some leakage. This allows fuel tank fumes being pushed out by the incoming fuel to be passed to the intake manifold when the tank is being filled. This is all the more so if, as mentioned, the charcoal canister drain valve isn't open. (It should be open but it's not uncommon for it, or the hose from it, to become blocked).

. . . I can't seem to find a solid answer were is it located. Some people were saying it's under the intake manifold and others over the passenger back wheel.

Is the car emission system CA-spec or Fed-spec? The location of the purge valve differs. On the CA spec, with the ignition coil on top of the intake manifold, it's slightly back of and down below the cylinder 4 high voltage tower on the coil. (In other words, it's below the back of the intake manifold.) On the Fed spec (coil on the back of the left side of the intake manifold), it's also under the intake manifold, but at the front, slightly to the left. It has two hoses and an electrical connector.

But, as noted, even if the purge valve is isn't sealing properly, the symptom could very well be a combination of faults.

There's a number of threads here about the same symptoms.

 

^^^ good point above about the charcoal canister


If you or another driver have been in the habit of 'topping-off' when fueling, the canister can become flooded, or, particles can be dislodged and interfere with drain valve function.

 

Thank you for all the answers. A p0457 just turned on as well. Is that further indicating a leaky hose or bad canister? Also it has only happened at the new Walmart gas station. I will see if it happens at a different one. Has anyone had issue at a Walmart gas station?

 

The code is indicating a leak in the fuel tank/fume recovery system. It could be caused by any number of faults, including malfunctioning canister drain valve or purge valve. It requires some further diagnosis.

Some diagnostic tools, such as the Dealers Subaru Select Monitor, can activate individual relays relays and solenoids to enable the technician to listen or test for proper operation. However, if something like the purge valve is leaking when it should be closed, this test approach will not necessarily identify the bad valve, as it could still operate electro/mechanically.

@relative4 suggested a test which could reveal an opening where there shouldn't be one.

 

Smoke test.

 

ever smell fuel excessive after a fill-up?

ever sense a 'whoosh' when removing the gas cap ? (pressure or vacuum)

any wrecks or work done before this problem began?

is the car new to you? what is its general condition? well-maintained?

 

I've the 'whoosh' when removing the gas cap, very very noticeable. Do you know how to fix it.?

 

bump! I'm having the same issue but without error codes. Different gas stations, never overfilling, but always filling to the click..

 

The charcoal canister and it's related valves will need to be examined. Could be as simple as mud or an insect nest in the 'drain' tube.

 

Bump. So I bought a 06 outback sw. 2.5i non turbo. I get the p1443 code. I changed the purge vavle? These bolted to the front of the intake. When I started car and used my FixD code reader it said no codes. 10 miles later same code popped up. Where is the vent control vavle. I think I'm saying that right. Oh also the car sat for a year before I got it from an older couple said the did regular maintenance but you know how that goes. This code is driving me up the walls. It's my first car and I don't wanna mess it up. So visual aids or links to the correct part would be awesome. I ha e researched but I don't really know what I'm looking for