Charcoal canister purge valve P0447: Safety inspection pass? - Nissan Frontier Forum
 
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post #1 of 7 (permalink) Old 02-16-2017, 09:44 PM Thread Starter
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Charcoal canister purge valve P0447: Safety inspection pass?

We don't have smog tests for state inspection here, just safety inspection. On the inspection paper they do have an "O.K." checkbox for emission control and fuel system. If I have a check engine light on will they even check the code?

If they do check the code and it is listing "P0447: EVAP EMISSION CTRL SYSTEM VENT CTRL CIRCUIT OPEN" will they even care? Or is that enough to fail it on a Virginia safety inspection?

On a local inspection stations website they list two related things they do: 1: "INSPECT AIR POLLUTION CONTROL SYSTEM (1973 and Subsequent Models) FOR: Installation and operation. Includes the catalytic converter and the fuel tank filler pipe."

2: "INSPECT HOOD AND AREA UNDER THE HOOD FOR: Operating condition of hood latch; presence of emissions system; evidence that any essential parts have been removed, rendered inoperative or disconnected. Proper levels of brake fluid, power steering fluid. Power steering belt — proper tension, wear or absence."

The way I read those two, as long as they visually see the catalytic converters and fuel tank filler pipe in ok shape, then number 1 gets an O.K. check. And if they see the emission system hasn't been ripped out, then number 2 gets the O.K. check.


What are your thoughts on it? This is the 09+ redesign of the charcoal canister housing with the filter built in for it. I would have a heck of a time taking it down to replace the purge valve that's stuck open according to the code if not really needed for state inspection. I did mess around with it for about an hour one night trying to get the purge valve out without taking the whole housing down, but a metal brake line was keeping me from rotating it enough for it to come out

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post #2 of 7 (permalink) Old 02-16-2017, 10:40 PM
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My guess the mechanic will pull the code, inform you what they found and quote you a price to fix it.

All depends how picky the shop doing the inspection is.

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post #3 of 7 (permalink) Old 02-16-2017, 11:26 PM Thread Starter
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My guess the mechanic will pull the code, inform you what they found and quote you a price to fix it.

All depends how picky the shop doing the inspection is.
You're probably right. Does it fail inspection throwing that code though?

Those here with the 09+ canister housing redesign that has built in filter: Where did you get your replacement purge valve from? Were you able to get to the bolt mounting the canister housing to the frame with a long socket wrench?

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post #4 of 7 (permalink) Old 02-17-2017, 07:45 AM
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I would poke around the state's website instead of asking random forums or shops.

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post #5 of 7 (permalink) Old 02-17-2017, 11:41 AM
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Originally Posted by lakerunner View Post
You're probably right. Does it fail inspection throwing that code though?

Those here with the 09+ canister housing redesign that has built in filter: Where did you get your replacement purge valve from? Were you able to get to the bolt mounting the canister housing to the frame with a long socket wrench?
I don't live in your State. As Shizzy suggested do a search and see if the canister is needed to pass the inspection. Better yet, call one of the inspection sites that you will not be using and ask your questions regarding the canister purge valve fail code will cause your vehicle to fail inspection.

You could also call a Nissan dealership and has your questions regarding parts, estimated cost, etc.

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post #6 of 7 (permalink) Old 02-17-2017, 03:11 PM Thread Starter
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Thanks, state website has same wording as quotes from 1 and 2 above. Thought with this part being such a common issue that there might be someone on this forum in my state who had experience trying to pass inspection with the issue.
Good idea just calling a station I'm not using to see if that issue will cause it to fail. I need to just buy the part and try to get it working though. After all I've read on this forum about it, it may not work for very long if replacing the valve does fix it initially.

The Dorman Evaporative Canister Vent Solenoid Valve 911-503 has a limited lifetime warranty, so I was thinking of getting it from advanceauto even though a bit more expensive than ordering online, for the exchange to be easier if using warranty in future.

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post #7 of 7 (permalink) Old 02-17-2017, 05:05 PM Thread Starter
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Update: I got it out! It took just a little turn to line up the four locking pegs on it to pull out. The difficult thing was a rigid plastic tube that I had to push away with one hand while trying to pull the valve out with the other hand.

I cleaned it and the plunger inside of it moves freely. I tried supplying power to it to test its motor, but that's very hard to do with the wires I had, trying to make contact with battery terminals and the device terminals.

I ended up connecting it back to its power harness but leaving it hanging in wheel well while turning ignition on to see if the plunger would move closed, but it remained open. Of course while turning key I couldn't be at the wheel well to see if it moved closed then open. Is that what it does with ignition on and engine not started? Or does it open for a second then shut while ignition is turned on?

Either way if it was working, when turning ignition back off, it should have shut at that point, right?

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Last edited by lakerunner; 02-17-2017 at 05:27 PM.
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