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Old 03-20-2013, 07:58 PM   #1
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P0431

I have a Banks Torque tube header and a Banks cat-back system. I also run a unichip and a Superchip progam, which is how I keep reading and clearing the code. This is the O2 sensor code for those who do not know. I have checked all my connections in the system and am looking for additional insight. It's an 06 with less than 41k. Is it possible the sensor(s) are bad? Cat(s)? or is the running of the chip and the program too much? I am going to contact them as well but figured I would hit up the vast expertise on this forum. Any discussion is appreciated. I avoid the dealer at all cost for anything.

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Old 03-20-2013, 11:36 PM   #2
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Have you done any offroading in water recently? If yes then you probably have water in the sensor throwing the voltage off. That is what happened with my sensor, so I put it in some gasoline for 10 minutes then let it dry out and the code never showed up.

If no... then I have no idea... My first guess would be a bad sensor, and I believe that should be the cheapest to replace first.

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Old 03-21-2013, 05:53 PM   #3
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Good to know about the water. I actually reset it again today and then refueled and it has not gone on all day. I guess I will wait until it stays on. Thanks for your input.
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Old 03-22-2013, 07:49 AM   #4
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Back on today from the start up. Ambient temp dropped over night so wondering if there isn't a correlation.
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Old 08-23-2013, 08:37 AM   #5
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I have been having the same problem, just replaced all four O2 sensors reset the light, and after a day BAM it's back on. No noticeable loss of fuel efficiency, but its still a pain to see that light on.
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Old 08-23-2013, 08:42 AM   #6
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Make sure you use NTK sensors. Others have been known to throw codes even when new.
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Old 08-23-2013, 08:47 AM   #7
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Quote:
Originally Posted by ChrisJeepTJ View Post
Make sure you use NTK sensors. Others have been known to throw codes even when new.
X2,3,4,and 5. Can't stress the NTK sensors enough. rockauto.com will be the cheapest to get them. I have a5% discount code for anybody interested!

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