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#4 of 8 OBD Communication Failure by lizs_sunfire

Sep 04, 2009 (10:14 am)

Hello. My name is Liz and I have a 1997 Pontiac Sunfire, Coupe, 2.2L, automatic.
 
I recently failed the Connecticut Emissions testing due to OBD Communication Failure. The OBD connector is not giving a read and is not producing any voltage. Recently, my horn and cig lighter also gave out (the cig fuse is fine).
 
I was wondering if there was another fuse that may be connected to all of these (horn, cig lighter, obd connector) somewhere down the line? Or could it be a bad wire in there someplace? I do not want to go to a mechanic, because I know what they'd charge for wiring.. plus, I enjoy the satisfaction of working on my own car
 
Thanks for your help! - Liz

Replies to this message:

• lobi (Apr 01, 2010 12:08 pm)
  • lizs_sunfire (Apr 01, 2010 12:31 pm)
    • lobi (Apr 01, 2010 2:45 pm)

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#5 of 8 Re: OBD Communication Failure [lizs_sunfire] by lobi

Apr 01, 2010 (12:08 pm)

Replying to: lizs_sunfire (Sep 04, 2009 10:14 am)

Replies to this message:

• lizs_sunfire (Apr 01, 2010 12:31 pm)
  • lobi (Apr 01, 2010 2:45 pm)

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#6 of 8 Re: OBD Communication Failure [lobi] by lizs_sunfire

Apr 01, 2010 (12:31 pm)

Replying to: lobi (Apr 01, 2010 12:08 pm)

Oh, geez!
 
I'm sorry, but about a month after this happened I ended up with a split in my breakline and found out my whole frame was rusted to the point I could stick my finger through it.. didn't feel safe driving it anymore. I got rid of the Sunfire (got a whole $300 for her) and got a 2005 Chevy Cobalt.
 
Sorry, again.. good luck! Hope you find a solution...

Replies to this message:

• lobi (Apr 01, 2010 2:45 pm)

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#7 of 8 Re: OBD Communication Failure [lizs_sunfire] by lobi

Apr 01, 2010 (2:45 pm)

Replying to: lizs_sunfire (Apr 01, 2010 12:31 pm)

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#8 of 8 99 sunfire NO2 problems by peter_engels83

Oct 09, 2010 (4:53 pm)

I have a 1999 sunfire that wont pass an e-test. It has a brand new cat on it and runs like a dream. But it continues to fail because of NO2 levels. The shop told me to check the EGR valve but the 99 sunfires dont have one. Does anyone know how the emissions systems work on a 99?. Since it didnt come with an EGR valve there has to be a different system to compinsate for the emissions.