PO455 Code

Discussion in 'LS, LT, LTZ' started by Kody, Mar 25, 2019.

  1. Kody

    Kody Junior Member

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    So my engine light is on and when I connected my scanner it gave me this code;

    PO455 - Evaporative Emissions System Leak Detected (large leak).

    There are no other indications of a problem and when I clear it the code comes back in a day or two. Anyone else have this problem and know what could be causing it?

    Any help would be appreciated.
     
  2. Shaggy

    Shaggy Administrator Staff Member

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    Get it worked our or still having issues?
     
  3. greggn

    greggn Junior Member

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    Loose or defective gas cap.
     

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