Code P0444, where is the purge valve located?

2008 NISSAN MAXIMA
173,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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AM57
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Where exactly is the purge valve located? I have been searching Google and YouTube and the results come back with purge canister, purge solenoid etc., but nothing with just the exact wording. I've replaced the EVAP Evaporative Emissions Vapor Canister Purge Vent Valve Solenoid by the gas tank and the Vapor Canister Purge Solenoid Valve close to firewall. The code still displays. Can anyone point me in right direction with a picture or model of part i need? thanks in advance.
May 12, 2025 at 7:18 AM
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STRAILER
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It sounds like you have already replaced both the vent and purge valve, (there are only 2 valves int he EVAP system). To be clear the purge valve is at the rear of the intake manifold, is this the one you replaced?

P0444 - EVAP Purge Volume Control Valve Circuit Open

So, this is a circuit open code so if you have replaced the valves the wiring needs to be checked, I can provide the guides and wiring diagrams for the repair if you want to go that route?
May 12, 2025 at 12:21 PM
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AM57
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First off. Thanks for responding. For sure I'll take the guides and writing diagrams. i have attached a video to show you what i changed. We drove it to emissions, but it failed, the guy said it didn't have sufficient information. It had to run several times. Do you have any info on this cycling process? What distance speed etc.?
May 12, 2025 at 4:30 PM
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STRAILER
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Yep, that is the correct valve (Purge).

Here is a guide to help with the monitor resets:

https://www.2carpros.com/articles/how-to-reset-an-engine-computer-monitor-program

I would check the EVAP lines and the gas cap seal, these are common places of leaks.

https://www.2carpros.com/articles/evap-system-code-repair

Please go over these guides and get back to us.
May 14, 2025 at 10:18 AM
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AM57
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Okay, i will try these and will get back with results. thanks
May 14, 2025 at 1:43 PM
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STRAILER
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Sounds good, have a good weekend!
May 15, 2025 at 10:42 AM