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No Communication from OBDII OBD II OBD 2 OBD2 Port (Cig fuse is good)

Discussion in 'Chevy C/K Truck Forum' started by mmor101, Jun 17, 2013.

  1. mmor101

    mmor101 New Member

    Got a Service Engine Soon light and would like to pull the code. I'm getting +12V power from the OBD connector but my scanner can not communicate. All the wiring in the back of the connector looks secure. Any ideas?
  2. 4x4squared

    4x4squared New Member

    What year is your truck?
  3. mmor101

    mmor101 New Member

    96' with the 4.3L. I wish I could give you the exact production date but the sticker on the door jamb is worn. I know for a fact is it OBDII because of the sticker under the hood.
  4. Enkeiavalanche

    Enkeiavalanche Moderator 1000 Posts

    How old is your battery? If it is weak your tester might not read the Truck..
  5. mmor101

    mmor101 New Member

    I just bought the truck but the battery looked somewhat new. I have over 12v at the OBD port, tested with multimeter.
  6. Enkeiavalanche

    Enkeiavalanche Moderator 1000 Posts

    did you Load test it?
  7. 4x4squared

    4x4squared New Member

    have we tried a different scanner? your scanner might just hate your truck :p

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