2000 fed spec p0420
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Location: Toronto, Canada
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So this morning this code appeared. A month ago I hade the code and replaced all my O2's. I have Cattman headers and Cattman hi flow cat which is about 5 years old. I knew the rear o2 was dead as it had no signal. When replaced it showed signal but the cat reading was all over the place. Code was cleared and I passed emissions. But now the code is back.
I've searched and I've only seen posts on precat replacement (which I dont have). Could this be a rear cat issue as well?
Also wanted to add I had misfiring issues previously which has been now corrected.
I've searched and I've only seen posts on precat replacement (which I dont have). Could this be a rear cat issue as well?
Also wanted to add I had misfiring issues previously which has been now corrected.
Last edited by NmexMAX; 10-02-2013 at 08:03 AM.
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TKHanson
5th Generation Maxima (2000-2003)
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11-24-2018 01:39 AM