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Old 04-10-2013, 09:45 PM   #1
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Join Date: May 2012
Posts: 22
code again

About 3 months ago my LJ produced code P 0431. I started reading about it on here and tried tightening the exhaust manifold bolts. I got the code cleared and it didn't come back until yesterday. Next step?

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Old 04-10-2013, 09:58 PM   #2
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Your code could be one of your mini-catatytic converters has gone bad(The ones by the exhaust manifold). One of mine had a hole burned through the catalyst material. I had the same symptoms as you. I could go 2-3 months between it throwing codes.

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Old 04-11-2013, 02:30 PM   #3
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Quote:
Originally Posted by amiller
Your code could be one of your mini-catatytic converters has gone bad(The ones by the exhaust manifold). One of mine had a hole burned through the catalyst material. I had the same symptoms as you. I could go 2-3 months between it throwing codes.
How did you determine that was the cause? Is there something I can look for?
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