Code P0444, where is the purge valve located?

Tiny
AM57
  • MEMBER
  • 2008 NISSAN MAXIMA
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 173,000 MILES
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.
Monday, May 12th, 2025 AT 7:18 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,663 POSTS
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?
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Monday, May 12th, 2025 AT 12:21 PM
Tiny
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?
Video (Click to make bigger)
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Monday, May 12th, 2025 AT 4:30 PM
Tiny
KEN L
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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.
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Wednesday, May 14th, 2025 AT 10:18 AM
Tiny
AM57
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Okay, I will try these and will get back with results. Thanks
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Wednesday, May 14th, 2025 AT 1:43 PM
Tiny
KEN L
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Sounds good, have a good weekend!
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Thursday, May 15th, 2025 AT 10:42 AM

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