schlit Posted June 18, 2007 Share Posted June 18, 2007 2002 Forester Check engine light came on, checked it and is throwing an emmisions trouble code. The dealership is trying to tell me they think it's a bad catalytic converter just based on the code. There is no power loss and/or exhaust system clogging, so I'm not sure how this could be causing a trouble code when it only has 80,000 mi on it. Woldnt you suspect an O2 sensor problem first before a cat? Never heard of one going bad like this. Quote Link to comment Share on other sites More sharing options...
nipper Posted June 18, 2007 Share Posted June 18, 2007 http://www.motor.com/MAGAZINE/Pdf/102006_09.pdf O2 sensor. nipper Quote Link to comment Share on other sites More sharing options...
86BRATMAN Posted June 18, 2007 Share Posted June 18, 2007 Yep. Most likely the first o2 sensor. Mom's 98 legacy has an intermittant code, I forget what the number was, for emmisions control. Mechanic had her ready to fork out money for a new cat... I fixed it for the price of the o2 sensor, whatever it was 3 years ago. Quote Link to comment Share on other sites More sharing options...
schlit Posted June 18, 2007 Author Share Posted June 18, 2007 Yep. Most likely the first o2 sensor. Mom's 98 legacy has an intermittant code, I forget what the number was, for emmisions control. Mechanic had her ready to fork out money for a new cat... I fixed it for the price of the o2 sensor, whatever it was 3 years ago. Dang stealerships. Thanks for the heads up guys. Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted June 18, 2007 Share Posted June 18, 2007 If you get a front o2 sensor, an OEM one is the best bet. Rear isn't so critical on brand. Get it from a Subaru dealer who sells parts online; it'll probably be less than the local dealer. Getting 80k miles out of an o2 sensor isn't too bad. Also small leaks even tiny unnoticable pinhole ones can cause this code. Though on an '02 you probably don't have that issue. Quote Link to comment Share on other sites More sharing options...
griffenrider Posted April 6, 2008 Share Posted April 6, 2008 Had a similar problem recently - if the 02 sensor doesnt' fix it, go through real carefully with a feather and a spray bottle full of slightly soapy water and see if you have any vacuum/pressure hose leaks. Not sure why, but that can throw a cat code as well. Quote Link to comment Share on other sites More sharing options...
OB99W Posted April 6, 2008 Share Posted April 6, 2008 http://www.motor.com/MAGAZINE/Pdf/102006_09.pdfNipper, Motor Magazine changed their website a bit. That article is now at:http://www.motor.com/magazine/pdfs/102006_09.pdf Quote Link to comment Share on other sites More sharing options...
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