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Discussion Starter #1

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Get 2 spark plug foulers. It has to be the same size and thread as the O2. Drill a hole in 2 and install both of them in each hole. This makes it so the 02 doesnt sense as much airway while still getting enough to not throw a code.
 

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P0420/P0430 codes came up on my 2006 Lexus IS350. I tried this temporary fix https://uploads.tapatalk-cdn.com/20140809/2enatuva.jpg but it only caused more codes to appear.

Now I found this totally different fix: http://mkiv.com/techarticles/oxygen_sensor_simulator/index.html

Would this O2 sensor simulator clear my P0420/P0430 codes?

I need this until I can find a more permanent solution with P0420/P0430 codes.
Do not know for sure. The curcuit does simulater the timed signaling. Does not do heat. But heat is a matter of just the right resister. If your year uses the same signaling. Then yes.

But your cats will still be bad. So you will need to remove them before they clog up.
 

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Discussion Starter #4
Do not know for sure. The curcuit does simulater the timed signaling. Does not do heat. But heat is a matter of just the right resister. If your year uses the same signaling. Then yes.

But your cats will still be bad. So you will need to remove them before they clog up.
I'll try.

What makes me confused is why do they ask to connect it to ECU pins, and not in place where the O2 sensor is connected. Isn't it supposed to just replace it and be connected to the same wires?
 

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I vote to delete the cats, and get the Vibrant J spacer. If the simmed signal is too similar to the primary oxygen sensor, you’ll get a code. Now, these method are only good if your emission test plugs into the OBD port. If there’s a tailpipe sniffer you will fail no matter what.
 
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