OBD-II port not working

Discussion in 'General Chevy & GM Tech Questions' started by hmccall3, Mar 11, 2008.

  1. hmccall3

    hmccall3 New Member

    Hey guys, I have a 2001 Silvy that keeps tripping the CEL every time I fill up. It's a problem with the fuel canister purge valve. I have been using my code reader to reset the light, but now the reader wont power on or self test when plugged into the port. I tried the reader in other vehicles and it seems to work fine, so I'm thinking it may be the port itself.
    I have checked for loose wiring and such.
    Anyone have any insights on this?
    Thanks in advance for any help!
  2. Gmcsuvguy

    Gmcsuvguy Rockstar 100 Posts

    There is a fuse for it... I can't remember which one it is in the fuse box right now...
  3. hmccall3

    hmccall3 New Member

    Thanks for the reply! I thought it may be a fuse issue, but the manual doesn't list a fuse for it specifically. Guess it's time to check each one individually.
    Thanks again
  4. Crawdaddy

    Crawdaddy All hail the Mad King!! Staff Member 5+ Years 1000 Posts Platinum Contributor

    I know on a Katrina truck, the OBD-II port didn't work because the power wire in the connector corroded to hell and didn't have a connection anymore. No power equals no OBD worky...
  5. check the cig ltr fuse.

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