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P0431 Diagnostic Trouble Code Discussion for December 2011

Warmup Catalyst System Efficiency Low (Bank 2)

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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2004 Kia Sedona EX 3.5L No Start, Hard Start VIN: KNDUP13134
P0431: Main Catalyst Efficiency Deterioration (Bank 2). ... problems in a five pound sack. I think I can account for the code issues without finding any that would cause the reason the Van was brought in. After a hot soak the Van will either not start or will take a long time cranking to start. Once it starts it ...
December 16, 2011