Thread: P0420
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Old 09-01-2006, 06:33 PM   #1
Wildman
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P0420

Ok, it means Catalyst efficency below threshhold...or something like that. Anyways, I was wondering if anyone else has had this and what they did to correct it. I keep getting this code a few days after I clear it out, so it's not a one time thing......
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