P0430 CEL Code
Driver School Candidate
Joined: Jul 2015
Posts: 12
Likes: 0
From: pa
Driver
Joined: Jan 2016
Posts: 84
Likes: 5
From: Ohio
I too had the dreaded PO420 or 430, bank 2 below threshold. I used a 1/2 gallon of Kerosene with 1/2 tank of fuel... Cleared with code reader. Stayed off for a month. Then bought one of these crazy mini cat extensions for O2 bung, and it works somewhat, every couple of months or so have to clear code again.
https://www.ebay.com/itm/233620843859
I also had PO420 on my daughters 08 Sentra, had 150k on it, I bought one if these cheapo cat from Canada, kept light off for over a year or 2, back on now...I think the super thin layer of catalyst they use on honeycomb disappeared over time.i only paid 120 for the converter, bolted right in factory exhaust and I got $60 back at junk yard for her old factory cat so can't complain. Used one of the mini cat spacers on her car and cleared code and it's been off for few months now.
https://www.ebay.com/itm/233620843859
I also had PO420 on my daughters 08 Sentra, had 150k on it, I bought one if these cheapo cat from Canada, kept light off for over a year or 2, back on now...I think the super thin layer of catalyst they use on honeycomb disappeared over time.i only paid 120 for the converter, bolted right in factory exhaust and I got $60 back at junk yard for her old factory cat so can't complain. Used one of the mini cat spacers on her car and cleared code and it's been off for few months now.
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