P0430
06-13-2011, 01:52 AM
#21
Staging Lane
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The cut outs could be causing a false P0430.
If there is any small amount of fresh air being sucked into the exhaust via the cutout and the O2 sensor sees it, then its a possibility.
Are the cutouts pre or post the rear O2 sensors? If they are before the O2 sensors then its possible.
Could be just bad cats, I have seen quite a few go out on these cars, modded or not.
If there is any small amount of fresh air being sucked into the exhaust via the cutout and the O2 sensor sees it, then its a possibility.
Are the cutouts pre or post the rear O2 sensors? If they are before the O2 sensors then its possible.
Could be just bad cats, I have seen quite a few go out on these cars, modded or not.
06-13-2011, 12:17 PM
#22
Teching In
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The catalytic converters are covered under the 7yr/70,000 mile emissions warranty. I had both replaced on my 2004 V at the Cadillac dealership for $0 out of pocket, was like a $1,300 bill to GM.
08-17-2011, 04:39 PM
#23
Teching In
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Before you got the p0430 code did u hear a rattle in the exhaust?
I heard a rattle within my passenger cat and then it went away two days later. And two days after that I got the p0430 code.
I heard a rattle within my passenger cat and then it went away two days later. And two days after that I got the p0430 code.
08-17-2011, 05:29 PM
#24
On The Tree
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I got the same code, well P0420 or whatever bank 1 happens to be. It went away 4 or 5 days later and never came back. Its been almost 4 months. If it is legit, the cat is likely shot and you may want to find out why or shut off the rear O2's. I would inspect the sensor and check for excess fuel, oil or anything that may be on the probe which could clue you in to a problem upstream. If there is a sensor fault, it is doubtful that you would get this code and not a circuit/sensor code.
