Cataclean Works

I wrote an article about "beating the P0420/P0430" http://carmilespergallon.blogspot.com/2014/09/beating-p0420p0430-catalytic-converter.html?m=1
This will tell you more things to check to fix this code. The article links to more articles and videos which will help teach you how to use basic live data to spot if there are other issues. I've found live data to not be helpful to see if spark plug issues have caused your catalytic converter to get worn out prematurely. I have a YouTube series on spark plugs which will help. https://www.youtube.com/playlist?list=PLh_yB9HJ4Gi5lsh8JE8lBq7cWMwCuyH_SShow more

Start with seeing what your spark plugs can tell you about how your engine is running: https://youtu.be/6Bb3MogmUrQ In this video I was looking at a motorcycle's spark plug, but the lesson applies to any car.

Try my other fuel treatment video by Lucas:
https://youtu.be/ATL19lVpmAk
Lucas Upper Cylinder Lubricant was tested for a year, while this cataclean was a 1 time test, with obvious changes on the sensors. While that is evidence, I'd love to hear from another diagnostic technician who saw it change sensor readings as well.

Granted, I've only found it worked when I did all other necessary repairs upstream of the catalytic converter and the dunderheaded PCM was still determined to call it a bad catalytic converter. Note the catalytic converter was replaced as well.

In my next video, you'll see where an upstream of the catalytic converter made it so the PCM no longer thought it had a catalytic converter inefficiency. https://youtu.be/roejxSSrn70

Please note: that when I was working for a reseller of cars at the time that they go with the cheapest of catalytic converters. I've heard that some people claim that that'll only keep you on the road for another year. They have to repossess their cars a lot and when they go cheap on their catalytic converters, they still don't find themselves to be replacing them, but this is just part of the conversation.

P0420 was the only possible catalytic converter inefficiency code on this car even though it was a V6, it only had 1 catalytic converter. This could help with scenarios where P0430 was the code for the bank 2 converter.

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