The previous discussion was about the primary O2 sensor. A bad catalytic converter would throw a totally different code, P0420.
Ever think to change the CAT, I had cat below efficiency threshold code, which triggered primary O2 sensor. I changed the cat and it fixed that.
If you changed the o2 and still getting code then time to move to the cat.
You can get Cats cheap, if used. Then sell your old one at a scrap yard for 150-185 bucks. I changed the cat at about 120xxx.
The previous discussion was about the primary O2 sensor. A bad catalytic converter would throw a totally different code, P0420.
what if it's only because you changed your header to a race header?
For a first post, that was pretty useless...
Usually that trips a P0420 (the ECU thinks the catalytic converter is going bad). Do the DIY secondary O2 spacer (not on the primary, on the secondary!) and that normally will prevent the P0420 whether you have Kpro or not. I believe you can disable OBD-II in Kpro and it will also ignore a P0420, but I'm not entirely sure.
Or just but the sensor. They are pretty pricey though. I bought mine from Honda. $311.00 I'm sure you can find it cheaper. Look on www.oxygensensors.com. They have a walker for 152 and a Denso for 207.
o sorry jk
ya i just skimmed over it my bad
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