Question about 2002 Kia Sedona

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Need to know what po431 code

Does any one know services codes for a sedona 2002 looking to find out what po431 readding means

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  • vicBoBe Aug 12, 2008

    I have the same code plus p0421 on my 2002 Sedona. I have not replaced anything yet because of the cost. I don't think running the van with these codes is damaging or performance degrading. I clear them periodically just to ensure those are the only codes present.

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Catalytic converter fault, I would try to replace the o2 sensor first because the cat cost just about $500! I know it is the sensor after that cat and I am pretty sure it is for the back side of the motor.

Good luck, I just replaced all o2 sensors and still got that code and I just purchased 2 cats- Big Money Problem!

Posted on Jul 26, 2008

  • 77sparky May 06, 2011

    bank 2 is the front the. cats are $300 each.

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My 2004 sedona has little power going up hills, my local machanic says the code( po431) means the bank 2 catyletic converter is bad, but which converter is bank2? also have a code -p01159 which no one...


The answer to your first question is the Oxygen sensor bank 2. Its the oxygen sensor after the catalytic towards the rear of the motor. For the other DTC there is no P01159 DTC, P0159 is Bank 1 Sensor 1 Oxygen Sensor bad, P1159 is an air intake leak or a MAF (Mass Air Flow Sensor leak)

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2002 kia sedona code po431


There are 2 catalytic converters on Sedonas, it sounds like the rear one is failing. These can be replaced with generic universal ones that can be found on ebay, don't let the dealership tell you otherwise. Any number of shops would install it for you if you brought it in to them, if you don't want to install it yourself.

Despite the fact that it may be running fine right now, It sould be replaced, however. A faulty catalytic converter will result in the vehicle's computer adjusting fuel/air mixtures, timing, etc. etc. in an effort to rectify what is percieves to be an inefficient engine operation.

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