Code P0442 help?
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This is a discussion on Code P0442 help? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Well today I recieved a check engine light with the code P0442 my Cobb AP stated it was "Evaporative Emission ...

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    Registered User AsILayDying's Avatar
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    Question Code P0442 help?

    Well today I recieved a check engine light with the code
    P0442 my Cobb AP stated it was
    "Evaporative Emission Control System leak detected (small leak)"
    What exactly is this and what can I do to check or fix this on my own. Any suggestions. Thanks
    BlobEye Syndicate #-666
    Stage II 04' WRX Black (Performance Race Solutions Tuned 310whp)
    "its never enough"

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    Sammich Makin' Pwincess wrxtreme06's Avatar
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    did you check your gas cap to make sure it's properly tightened?

    if yes, thennnnn i'm trying to find some more answers on nasioc right now. i'll post back if i find anything else

    desiree
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    Registered User AsILayDying's Avatar
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    Quote Originally Posted by wrxtreme06 View Post
    did you check your gas cap to make sure it's properly tightened?

    if yes, thennnnn i'm trying to find some more answers on nasioc right now. i'll post back if i find anything else
    wrxtreme06 I have to say you are one of the nicest auto-enthusiests I have met. You are always eager to help. I really do appreciate it very much. I will try the gas cap trick and see if thats it. Thanks again.
    BlobEye Syndicate #-666
    Stage II 04' WRX Black (Performance Race Solutions Tuned 310whp)
    "its never enough"

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    Moderator Donkey's Avatar
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    Might be one of the EVAP solenoids. One on the manifold and one under the trunk by the charcoal box.
    Resident Adviser @ WTF Tuning, LLC
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    Registered User AsILayDying's Avatar
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    Quote Originally Posted by Donkey View Post
    Might be one of the EVAP solenoids. One on the manifold and one under the trunk by the charcoal box.
    Yeah wish I could say I knew enough to know exactly what I was to be looking for, but I really dont. So maybe a quick photo of the location or solenoid that Im lookin for would be a huge help. Thanks.....
    BlobEye Syndicate #-666
    Stage II 04' WRX Black (Performance Race Solutions Tuned 310whp)
    "its never enough"

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    Registered User EvoEatr's Avatar
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    What year is this vehicle? How many miles? .... If you have the means I would smoke test the system if you find nothing with a visual inspection.When you tighten your fuel filler cap check the seal and make sure it isn't dry rotted/torn....The canister purge solenoid is located to the left of the alternator ( when viewed from the engine) you will see a couple vacuum lines coming off of it and an electrical connector... I've seen many times when people are in the engine modding whatever there modding (intake,FMIC etc etc ) they move the solenoid a tad and it cracks/breaks off one of the nipples...the vent control solenoid is back by the canister in the passanger side "muffler well"...If either of these actual solenoids go bad it more than likely throw a EVAP control system malfunction code...Have you had the fuel pump or fuel sender out recently? I've also seen people who throw in a HO pump or whatever..during reinstall they bend the gasket for the pump over and tighten the nuts not realizing it and this sometimes throws a leak code...

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    Registered User AsILayDying's Avatar
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    Ok the vehicle is a 04' WRX Sedan Stage II Cobb AP, it has
    57,xxx miles and no I have not had any parts out recently or new ones installed. So I will look at these locations this morning. Thanks for the help. I hope this is an easy fix.
    BlobEye Syndicate #-666
    Stage II 04' WRX Black (Performance Race Solutions Tuned 310whp)
    "its never enough"

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    Moderator Donkey's Avatar
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    Quote Originally Posted by AsILayDying View Post
    Ok the vehicle is a 04' WRX Sedan Stage II Cobb AP, it has
    57,xxx miles and no I have not had any parts out recently or new ones installed. So I will look at these locations this morning. Thanks for the help. I hope this is an easy fix.
    If you search "P0442" on NASIOC alot of threads will come up with pictures and solutions........
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




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