P0420 Help
I am looking for a little advice here. 04 RX8 threw a P0420 (Cat) code over the weekend. I was reading that it could possibly be the O2 sensors or the cat itself. What is the best way to test what is truly wrong? I don't want to replace one thing have have it be the other.
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unbolt the cat, look inside. If there's pieces bouncing around, it's the cat.
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put tape over the light
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Mode 6 data.
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Put tape over?
Mode 6? At least one of the comments was real advice. |
Originally Posted by silkd
(Post 3913285)
Put tape over?
Mode 6? At least one of the comments was real advice. http://www.finishlineperformance.com...4-08-1924g.pdf Read the first & second page thoroughly to see how Mazda techs check the cat converter using Mode 6 data. And here's a wiki link to Mode 6 data: http://en.wikipedia.org/wiki/On-boar...e_of_Operation |
visual cat inspection
if you r going to look inside the cat pull the o2 sensor and look thru the hole.
when mine failed it looked normal thru the end but was completely melted inside. |
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