would this throw a code?
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
That dimple is normal. They all came that way from the factory.
P0430 is a common code. It simply means that cat efficiency is below a preset threshold (thus a reduced oxygen storage capacity of the cat, and an increase in tail pipe emissions). In some rare cases, replacing the O2 sensor will solve this. Mostly, the issue is that coatings have worn off the cat substrate and emissions levels have increased.
You live in CA so you'll have to deal with this at some point to pass emissions.
P0430 is a common code. It simply means that cat efficiency is below a preset threshold (thus a reduced oxygen storage capacity of the cat, and an increase in tail pipe emissions). In some rare cases, replacing the O2 sensor will solve this. Mostly, the issue is that coatings have worn off the cat substrate and emissions levels have increased.
You live in CA so you'll have to deal with this at some point to pass emissions.
I'd also shake the pipe a bit and see if you hear any rattling. You could also have a broken substrate in the CAT.
As RPM WS6 pointed out, the O2 sensor is much more likely to be the culprit at this age - so that's the place to start if there are no obvious signs of breakage in the CAT.
As RPM WS6 pointed out, the O2 sensor is much more likely to be the culprit at this age - so that's the place to start if there are no obvious signs of breakage in the CAT.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Here is another thread from yesterday about this:
https://ls1tech.com/forums/general-m...smog-test.html
In this case, the cats were still working as per the sniffer test results, even though this code was present. If yours still passes the CA sniffer too, and it's only the code that is causing you to fail an OBD scan test, then you can always disable P0420/P0430 via custom tuning.
https://ls1tech.com/forums/general-m...smog-test.html
In this case, the cats were still working as per the sniffer test results, even though this code was present. If yours still passes the CA sniffer too, and it's only the code that is causing you to fail an OBD scan test, then you can always disable P0420/P0430 via custom tuning.
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Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
You could, however, swap O2 sensors from bank to bank and see what happens. In the thead I linked above, I believe that new O2 sensors still didn't get rid of the code, yet the cats managed to pass the exhaust sniffer just fine. That was why I recommended code deletion to the poster in the other thread.
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Verdad Gallardo Don't forget anti-size compound on the sensors when you switch them. (Under warranty repairs) A dealer took one of mine out and didn't apply the compound.
That was very very very bad...
That was very very very bad...
Clearing the code is easy. Most scanners will do that for you. The catch is that you have to drive the car for a while afterwards in order for the car to build up enough history to pass the test.
Joined: Nov 2001
Posts: 34,629
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From: Schiller Park, ILL Member: #317