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Hyundai and Kia Forum: Kia Sedona error code P0431 & P0421?
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Old 10-11-2010, 04:53 PM
mpower mpower is offline
Junior Member
Join Date: Oct 2010
Posts: 1
Default Kia Sedona error code P0431 & P0421?

Hello! am getting the following codes:
P0431- Warm up catalyst below threshold Bank 2
P0421- Warm up catalyst below threshold Bank 2
P0421- Bank 1

I have got mixed opinion - some say I need to replace cat while other say replacing O2 sensors would do. Please help!!
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