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Thread: P0444 Code Mazda 3 2011 Hatchback

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    Question P0444 Code Mazda 3 2011 Hatchback

    Hi ANyone have any experience with this code. I got this code and want to figure out if I go straight to replacing the he Evaporative Emission System (EVAP) canister purge volume control solenoid valve or if there is anything I should be looking at before buying the part.

    If anyone has solutions, diagnostic suggestions or experience dealing with this would be greatly appreciated.

    I have already tried the following:
    Check Gas cap (cleared codes) it came back
    Check Hoses for wear and tear (nothing loose)

    Symptoms:
    Terrible gas mileage
    Check Engine Light persistent even after clearing it
    Last edited by 416GXM3; 09-12-2020 at 08:18 PM.

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    Sr Member Flagrum_3's Avatar
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    Default Re: P0444 Code Mazda 3 2011 Hatchback

    Quote Originally Posted by 416GXM3 View Post
    Hi ANyone have any experience with this code. I got this code and want to figure out if I go straight to replacing the he Evaporative Emission System (EVAP) canister purge volume control solenoid valve or if there is anything I should be looking at before buying the part.

    If anyone has solutions, diagnostic suggestions or experience dealing with this would be greatly appreciated.

    I have already tried the following:
    Check Gas cap (cleared codes) it came back
    Check Hoses for wear and tear (nothing loose)

    Symptoms:
    Terrible gas mileage
    Check Engine Light persistent even after clearing it
    I've never had the P0444 code, but I have had the p0443 code which are very similar. In my case it was the PSV which I changed out twice. The third time I got the code, I just left it alone, as it only gives me issues once in a blue moon. I get a rough start like twice a year and that's it, I'm not experiencing excessive fuel consumption and the code doesn't come back when I clear it. Its possible you have a wiring issue, which takes some time to check and diagnose. You can try changing the PSV first and if the code persists, then you know you have another issue.


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    Default Re: P0444 Code Mazda 3 2011 Hatchback

    Are you sure its not a P0442 code?

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    Default Re: P0444 Code Mazda 3 2011 Hatchback

    I think its P0442 lol

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    Default Re: P0444 Code Mazda 3 2011 Hatchback

    Quote Originally Posted by rockbottom View Post
    I think its P0442 lol
    He said he checked his gas cap, although the gas cap could be bad and he wouldn't know how to tell. Also a bad gas cap would be unlikely to cause very poor fuel economy.

    Both P0444 and P0443 are Evaporation Control system codes.

    PCV are known to be an issue also with these cars.


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    Default Re: P0444 Code Mazda 3 2011 Hatchback

    Quote Originally Posted by rockbottom View Post
    I think its P0442 lol
    sorry guys its p0442 code not a p0444.. messed up on that and i don't know how to change it. Anyways its ongoing i'm going to do a smoke test to see where the leak is and I will let update.

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