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2001 Volkswagen Jetta Check Engine Code PO442

Help. Check engine light keeps coming on due to above code.

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  • Paul McGrath
    Paul McGrath May 11, 2010

    A 2001 Volkswagen Jetta is not Hyundai Santa Fe

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This is an Evaporative Emissions System code - indicates the computer has checked the system and concludes there is a leak in the system (small leak).. could simply be a loose fuel cap.

Posted on May 28, 2009

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I have a 2005 VW Jetta 2.0 and the Check engine light comes on and stays on then shuts off for half a day then comes back on.


TAKE CAR TO ANY AUTO PARTS STORES, THEY WILL CODE SCAN CAR FREE SEE WHAT TROUBLE CODE CHECK ENGINE LIGHT IS FLASHING.

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Check engine lit on code po442,po445


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Check engine light comes on


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This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain on. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially turn on.

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How do i get my check engine light codes out on 1995 VW jetta


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Turning off the check engine light...2001 VW Jetta TDI


You have a few options:

1.) Don't do anything. Once the computer sees the engine run normally for a few cycles, it will automatically clear the code.

2.) Connect a scan tool to the OBDI port to clear the codes manually. Local auto parts stores will often perform scan tool diagnostics free of charge.

3.) If you want to remove the code quickly without any special tools, just disconnect the battery and leave it disconnected for a while. (How long varies for different cars, as some engine PCM's have capacitors that hold a charge for a short while after losing battery power.)

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You may just have a dirty MAF sensor, spray brake clean through the sensor and clear the code, run it a few days to see if the code comes back.

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