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Message: <blockquote data-quote="Oneeye" data-source="post: 25169" data-attributes="member: 9311"><p>I am at a lose here. My 15 year old son just used all his money to purchase his first car, a 2010 equinox LS 2.4l. It was in a small front end accident. Broke radiator, condenser and cooling fans. We have replaced all that and now are getting a Po131 low O2 sensor code. I pulled the schematics and checked continuity and voltages and them seem fine but I'm not sure. I have pics of my findings. I am slightly concerned it is a head gasket and that is way I'm getting a misfire but compression readings came back ok and I don't see coolant getting less. I do get quite a bit of smoke out the tail pipe and it runs rough. I also changed the plugs and O2 sensor 1 with AC Delco.</p></blockquote><p></p>