davmar123 Posted July 24, 2004 Share Posted July 24, 2004 Hello everyone, this is my first post. I have a '96 Legacy wagon with 96,000 miles (2.2L). The check engine light came on about a week ago, took it to Auto Zone to read the fault code. Two stored codes ( Cyl. 2 misfire + Catylist Eff. below norm [O2 sensor] ). The fault codes were cleared and the Check Engine Light has not come back on. Could a faulty spark plug or elect. connection cause the misfire? I'm pretty sure a misfire would cause an O2 sensor fault. I'd rather not spend $100 for a new O2 sensor if a new set of spark plugs will do the trick. Any thoughts? Thanks. Quote Link to comment Share on other sites More sharing options...
powderhound Posted July 24, 2004 Share Posted July 24, 2004 I'd start with the spark plugs. My dad's 92 had a misfire and it was simply the #2 spark plug. Quote Link to comment Share on other sites More sharing options...
gbhrps Posted July 24, 2004 Share Posted July 24, 2004 My 97 OBW had a similar problem, a Check Engine Light and a misfire code, but everything checked out fine. The dealer was given permission to change one component at a time to find the problem. First thing changed was the ignition coil and bingo! The problem was solved. Quote Link to comment Share on other sites More sharing options...
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