P0430 - Bad Catalytic Converter - Second Generation Nissan Xterra Forums (2005+)
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post #1 of 123 (permalink) Old 10-21-2008, 01:01 AM Thread Starter
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P0430 - Bad Catalytic Converter

A few weeks ago, the SES light came on, so I went to Auto Zone for a free scan. The code was P0430 which is an inefficient cat code. Just got back from the dealer today with a new cat. Luckily, the cat is covered under the factory 8 yr / 80K mile catalytic converter warranty. I'm only at 52k miles, so it was $0 out of pocket.

Anyone else have a catalytic converter go bad in their Gen2 ??
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post #2 of 123 (permalink) Old 10-21-2008, 02:22 AM
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Cat's don't normally just go bad. They go bad for a reason. Did you make sure there was no mud clogging the vents on the o2 sensors? or that there weren't any other engine codes along with the Cat code?
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post #3 of 123 (permalink) Old 10-21-2008, 03:38 AM
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mine went...no reason.

Wana step out side and decide?
Cortex w 87 performance tune.
2" spacers, 2" AAL, heated seats, another thing or 2 somewhere I am sure.
PS Pulley, IMS, Magnaflow 40 muffler, Volant, and thats all I can think of.
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post #4 of 123 (permalink) Old 10-21-2008, 05:58 AM
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huh, that's weird. It's good to know that the cat is covered under warranty, though
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post #5 of 123 (permalink) Old 10-21-2008, 08:41 AM
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My p0430 code went off about a month ago. I'm supposed to bring it to the dealer today but won't have time.

Titan Swap'd!
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post #6 of 123 (permalink) Old 10-21-2008, 12:03 PM Thread Starter
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Quote:
Originally Posted by XterraDude View Post
Cat's don't normally just go bad. They go bad for a reason. Did you make sure there was no mud clogging the vents on the o2 sensors? or that there weren't any other engine codes along with the Cat code?
Not sure about mud on the O2 sensors, but the only code that both Auto Zone and the dealer told me about was the P0430.
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post #7 of 123 (permalink) Old 10-21-2008, 01:52 PM
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interesting.
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post #8 of 123 (permalink) Old 10-22-2008, 01:52 PM
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Cat's go bad from an excessively rich mixture. Nissan has a real bad history in using crappy vendors for their cats.

Hopefully no pieces of ceramic got sucked back into your engine scoring cylinder walls. This was one of the reasons why I was after a mid-length header.

ASE Advanced Master Tech

Blue 2006 X 4x4
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post #9 of 123 (permalink) Old 10-22-2008, 03:12 PM
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I just heard back from Nissan. They are covering my cats under warranty and giving me a rental until the cats come in in a few days. This is actually the best experience I've had with the Nissan service dept. I've got a magnaflow muffler and a turndown at the end and they didnt try any BS trying to say it wasnt covered. Good job Nissan! lol

Titan Swap'd!
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post #10 of 123 (permalink) Old 10-22-2008, 04:50 PM
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