Great fun codes...

Discussion in 'Engine & Performance' started by Tums, Mar 28, 2012.

  1. Mar 28, 2012 at 7:58 PM #1
    Tums

    Tums Full Access Member

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    So apperantly this is common. Truck punched me in the face with two devilish codes.. P0171 P0174

    Now I've read a million different reasons for them. Any suggestions?
    Gonna clean the MAF tonight and check the PCV and elbos.
     
    Last edited: Mar 28, 2012
  2. Mar 29, 2012 at 12:11 AM #2
    Eric of Memphis

    Eric of Memphis Full Access Member

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    Yep most time a vac leak of some sort

    Sent from my SGH-T959V using Tapatalk
     
  3. Apr 29, 2012 at 11:23 PM #3
    tennessee.operator

    tennessee.operator Junior Member

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    Those are EVAP codes for the emissions system.. Check the seal on the fuel cap. If it looks good but you aren't sure just buy a new one and clear the codes.
     
  4. Apr 29, 2012 at 11:36 PM #4
    UtahFord

    UtahFord FFS best looking guy

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    i had that code right before my fuel pump went out
     
  5. Apr 29, 2012 at 11:44 PM #5
    tennessee.operator

    tennessee.operator Junior Member

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    That is fairly common as well. The tank holds a slight pressure inside and if the pump is failing the pressure will as well, shooting the code..
     
  6. Apr 29, 2012 at 11:50 PM #6
    UtahFord

    UtahFord FFS best looking guy

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    my truck only had 90k on it when it happened look on ebay for one thats what i did
     
  7. Apr 29, 2012 at 11:57 PM #7
    TFIDDLE

    TFIDDLE VEEEE TEn

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    My Friends ended up bein fuel pump

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  8. Apr 30, 2012 at 12:14 AM #8
    Tums

    Tums Full Access Member

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    I bought a new cap awhile ago. They still came up. I guess I can try the fuel pump. Last thing would be the intake gasket..
     

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