GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

P0430 code; how to approach

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Old 05-13-15, 12:29 PM
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NoUltimatu
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Default P0430 code; how to approach

I guess everyone is saying go for the oxygen sensors first. Is that correct? It's only the rear two as well, right? Do I reset the codes and drive it again until it pops up again. Also if my MAF sensor was bad for a while and I recently had it replaced does that mean anything? Thanks for the help.
Old 05-13-15, 01:05 PM
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magic5g
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Try disconnecting your battery first.

I've had the same code so I disconnected my battery and the code was cleared but came back after a day. Then I started installing some parts and left the battery disconnected for a few weeks. When I reconnected the battery the second time, the code cleared and has been good for a month.
Old 05-14-15, 01:42 PM
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NoUltimatu
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So theoretically if I knew my 0 to 60 time, would I be able to tell if the catalytic converter was bad if I floored it and got a lower reading?
Old 05-14-15, 05:09 PM
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Kyle Harty
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https://www.clublexus.com/forums/gs-...and-p0430.html

This thread is just down towards the bottom of the front page, should be helpful.
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