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Jeep Wrangler JK
JK General Discussion
2015 JKU P0420
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<blockquote data-quote="WaterHead" data-source="post: 463949" data-attributes="member: 23338"><p>2015 JKU Rubicon - @75k Miles</p><p></p><p>Could use some help on P0420 Code</p><p></p><p>Had a P0052 02 Sensor 2/1 couple weeks ago and replaced all 4 O2 sensors, cleared all codes and ran good for about a week.</p><p></p><p>Friday the CEL came on and scanner showed P0420 (Bank1). Seems to be running good otherwise. Checked for any exhaust leaks and could see/hear any. Attached are screenshots of both Bank 1 and Bank 2.</p><p></p><p>Questions, should I not worry with chasing down a short or open circuit since I'm getting a voltage ready on all 4 sensors?</p><p></p><p>Based on my knowledge, the Bank 1 cat is not working. Should I just replace? Seems like replacing the cat is just a band-aid fix with only 75k miles on?</p><p></p><p>Thought about running some Seafoam through and see if that cleans things up.</p><p></p><p>Currently have battery disconnected to see if I can get all the codes (temporary and permanent) to clear and if they come back on for 3rd time.</p><p></p><p>[ATTACH=full]126566[/ATTACH]</p><p></p><p>[ATTACH=full]126567[/ATTACH]</p><p></p><p>[ATTACH=full]126568[/ATTACH]</p></blockquote><p></p>
[QUOTE="WaterHead, post: 463949, member: 23338"] 2015 JKU Rubicon - @75k Miles Could use some help on P0420 Code Had a P0052 02 Sensor 2/1 couple weeks ago and replaced all 4 O2 sensors, cleared all codes and ran good for about a week. Friday the CEL came on and scanner showed P0420 (Bank1). Seems to be running good otherwise. Checked for any exhaust leaks and could see/hear any. Attached are screenshots of both Bank 1 and Bank 2. Questions, should I not worry with chasing down a short or open circuit since I'm getting a voltage ready on all 4 sensors? Based on my knowledge, the Bank 1 cat is not working. Should I just replace? Seems like replacing the cat is just a band-aid fix with only 75k miles on? Thought about running some Seafoam through and see if that cleans things up. Currently have battery disconnected to see if I can get all the codes (temporary and permanent) to clear and if they come back on for 3rd time. [ATTACH=full]126566[/ATTACH] [ATTACH=full]126567[/ATTACH] [ATTACH=full]126568[/ATTACH] [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
2015 JKU P0420
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