BruceBruce Posted April 16, 2010 Share Posted April 16, 2010 Ok so i've been reading about this code cause my car just threw this code along with the p0420. Everyone posting about this on nasioc,here and the other site, something with an i, has had a modded car with up/dp. Varying degrees in the differences of dp, catted/uncatted, but my car is completely stock. Plus i had the dealership replace my stock downpipe cats under warranty last month cause of the p0420 code. So im guessing my rear o2 is going bad than? Does this mean i need to go stage2 really fast and get tuned by infamous to keep the code from coming back? Once again im completely stock with brand new rear cats. Thanks for the help Link to comment Share on other sites More sharing options...
BruceBruce Posted April 16, 2010 Author Share Posted April 16, 2010 no comments? Link to comment Share on other sites More sharing options...
erichix Posted April 18, 2010 Share Posted April 18, 2010 Especially considering that you've got new catalytic converters, call Fred Beans and have them ship you a rear o2 sensor. I had the same problem and solved it by replacing the rear sensor. Dealer wanted $220 for the sensor and $95 to put it in. FB wanted $139 IIRC and replacing it takes 10 minutes. Link to comment Share on other sites More sharing options...
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