P0430 bank 2 cat

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openspaces
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P0430 bank 2 cat

Postby openspaces » Sat Mar 02, 2013 2:56 pm

Searched the threads and this code looks to be pretty generic in that it. Could be gas cap, O2, cat just to name a few.

Pathy is a 2006 97k and does seem to occasionally run a little rough when stopped at lights. Power seems fine. Tried the simple of making sure gas cap is tight.

What's the consensus on next step? O2 pre/post cat or cat replacement?


openspaces
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Re: P0430 bank 2 cat

Postby openspaces » Tue Mar 05, 2013 6:27 am

So I'm guessing by the lack of response that everyone has either moved onto the next gen truck, or the solution(s) are somewhat random

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smj999smj
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Postby smj999smj » Tue Mar 05, 2013 11:04 am

Not everyone is available to answer questions 24-7. I do what I can, but I'm also a moderator at NissanForums.com and sometimes answer questions on Jonko's website and NissanHelp.com. I also work 12 hour shifts, five days at a time and have a second job, so I don't always catch every question. I'm sure there are many other members in similar situations, so, one can understand if a question sometimes slips through the cracks, so to speak.

The most likely cause of a P0430 code is an inefficient upstream (or front) catalytic converter on the left side of the vehicle. Usually when an oxygen sensor is at fault, there is also a stored DTC for the oxygen sensor, or a leak in the exhaust near the sensor. Testing for the cause would involve scantool monitoring the rich-lean cycles of the front O2 sensor, Bank 2, and comparing it to the cycles of the reat O2 sensor, Bank 2. There should be an approximate ratio of 2:1, respectively. Rough idle is pretty common on the R51's. Sometimes performing an idle air volume relearn helps. Bad motor mounts has also been an issue for roughness at stops.

dcuptown
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Postby dcuptown » Tue Mar 05, 2013 2:07 pm

got the same code on Saturday, took it to the dealership and they replaced the driver side front catalytic converter. no SES since.

openspaces
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Postby openspaces » Wed Mar 06, 2013 5:21 pm

Thanks for the replies. By no means do I expect an immediate answer just guess Ive been spoiled in the past on this site. Used to get multiple responses in a day and after a couple days nothing so figured I'd stoke the fire a bit.

Either way appreciate the responses.

openspaces
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Postby openspaces » Wed Mar 06, 2013 6:04 pm

Forgot to ask. Will a bad O2 throw a specific code?

dcuptown
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Postby dcuptown » Thu Mar 07, 2013 9:03 am

In my experience with the P0430 code, I asked the service guy if they also replaced the O2 sensor and he said no. All they replaced was the cat.

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smj999smj
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Postby smj999smj » Thu Mar 07, 2013 2:22 pm

openspaces wrote:Forgot to ask. Will a bad O2 throw a specific code?
There are several O2 sensor codes, depending on the type of failure and the location of the sensor. It is possible for a faulty O2 sensor to not set a trouble code, but most of the time they will.

mrfatboy
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Postby mrfatboy » Sun Apr 07, 2013 12:41 pm

I just got the P0430 code. Bad Catalytic Converter Bank 2. The dealership replaced the CAT. I only have 71k on my '05 Pathy so the $2500 charge was covered under warranty.

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Postby rxman » Wed Oct 14, 2015 3:58 pm

I know this is an old thread, but I need some advice. I have the P0430 code, but I do not think it is my cat. My reasoning is based on my O2 sensor readings. If I am correct, sensor 1 is before the first cat and sensor 2 is after. With the car engine off or at idle, sensors 1 and 2 on bank 1 both read 0.3 V. On bank 2, sensor 2 also reads 0.3 V, but sensor 1 reads 0.6 V. Similarly, as I drive the vehicle, sensor 1 on bank 2 always reads much higher than all the other sensors (and it is the only sensor that exceeds a reading of 1V). The post cat sensors on both banks always have similar numbers. Am I correct to assume my pre-cat sensor is faulty?


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