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Jeep Wrangler JK
JK General Discussion
P0420/P0430 with OEM cat on ‘07 JK
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<blockquote data-quote="Mike Baker" data-source="post: 454870" data-attributes="member: 24631"><p>Those codes could theoretically be either - P0420 is Bank 1 and P0430 is Bank 2, so it doesn’t specify which sensor it is. That said, the downstream sensors are checking for variation from the upstream sensors, so logically putting foolers on the downstream ones should eliminate the problem. And given that the upstream ones are supposed to control the air-fuel mixture, I’d rather not mess with them.</p></blockquote><p></p>
[QUOTE="Mike Baker, post: 454870, member: 24631"] Those codes could theoretically be either - P0420 is Bank 1 and P0430 is Bank 2, so it doesn’t specify which sensor it is. That said, the downstream sensors are checking for variation from the upstream sensors, so logically putting foolers on the downstream ones should eliminate the problem. And given that the upstream ones are supposed to control the air-fuel mixture, I’d rather not mess with them. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
P0420/P0430 with OEM cat on ‘07 JK
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