Last post on Oct 09, 2010 at 4:53 PM
You are in the Pontiac Sunfire
What is this discussion about?
Pontiac Sunfire, Engine, Coupe
#4 of 8 OBD Communication Failure
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
#5 of 8 Re: OBD Communication Failure [lizs_sunfire]
Apr 01, 2010 (12:08 pm)
Hi Liz !
I found your post from 6 months ago.
I have the same deal.
I hope you may have found an answer you can share.
I have no power at obd2 port but good cig fuse.
Well?? Come on Liz.. be my hero.
#6 of 8 Re: OBD Communication Failure [lobi]
Apr 01, 2010 (12:31 pm)
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...
#7 of 8 Re: OBD Communication Failure [lizs_sunfire]
Apr 01, 2010 (2:45 pm)
I found mine.
Hope maybe it will help someone else out.
I had a good cig lighter but my HORN fuse was blown and thet solved it.
ta-da...got my codes.
#8 of 8 99 sunfire NO2 problems
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.