Feb 2, 2010 · I have started getting a P0430 code on my 2006 4.0L. It is occuring with increasing frequency over the last 1000 miles or so and interestingly seems...

Jul 10, 2012 · I bought a OBD II Bluetooth scanner and it is pulling P0420 and P0430 codes. I am curious what is the best course of action, I don't have to worry about actual emissions (no testing in …

Dec 2, 2025 · Chasing a P0430 CEL code (Catalyst system efficiency below threshold bank 2) popping up every few hundred miles on my 2005 Land Cruiser. I’ve tried a bottle of CATACLEAN that didn’t …

May 16, 2010 · A code P0430 may mean that one or more of the following has happened: The catalytic converter is no longer functioning properly \ An oxygen sensor is not reading (functioning) properly …

Jul 28, 2014 · GS - 2nd Gen (1998-2005) - Code p0420 & p0430 - So my check eng light came on, and it gave me these two codes (p0420 bank 1 catalyst efficiency below threshold) (p0430 bank 2 …

Aug 10, 2012 · Cliffnotes: I've been throwing P0420/P0430 (catalytic inefficiency right/left bank) codes since earlier this spring and now have to replace the exhaust manifolds. History: 06/06 build date, …

Mar 13, 2024 · I've been driving with this P0430 - Catalyst System Efficiency Below Threshold (Bank 2) code for over 6 months now. Tried 2 bottles of catakleen to no avail. My daily commute is a fairly …

Oct 2, 2018 · P0430 Code, Catalyst system efficiency below threshold (Bank 2) unatiq Aug 12, 2020 This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, …

Oct 31, 2016 · P0420 and P0430 only trigger if your downstream catalytic converter is not reading cleaner air than your primary O2 sensors, letting you know your cats are 1. BAD, or 2. MISSING. …

Apr 2, 2019 · I just bought this GX 470 with 102K on the clock. It is in really great condition for the most part. I searched for quite a while and this was the best condition I found in my area. When I got it …