5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

P0430 ???

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Old Mar 6, 2005 | 04:46 PM
  #1  
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P0430 ???

I got an SES light on, and the code it gives me is:
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
It's a 2k Cali with 70k miles on it.
I had this code show up before - and that was an exaust leak between rear exhaust tube and muffler assembly. I got that fixed. But the SES light didn't go away. I did reset it twice, but it still comes back. I've been riding like this for about four month now.
I didn't notice any performance issues with the car. It seems to run as usual. I also keep track of fuel consumption, and MPG seem to be the same as before (aoround 17-20)
What could be the problem?
Is that an oxygen sensor, or something else?
Old Mar 6, 2005 | 05:17 PM
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http://forums.maxima.org/showthread.php?t=374481
Old Mar 6, 2005 | 05:20 PM
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