Join Now
International Automotive Technicians Network

P0431 Diagnostic Trouble Code Discussion for April 2011

Warmup Catalyst System Efficiency Low (Bank 2)


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2002 Kia Sedona LX 3.5L MIL Lamp on VIN: KNDUP13142
P0431: Main Catalyst Efficiency Deterioration (Bank 2). hello all. I have this Kia that is kicking the crap outta me. the code is for bank 2 catalytic converter. When I'm reading the o2 data, the bank 1 converter is definitely weak. The bank 2 converter readings will rise on initial start up to about 7-850 mV and h...
April 06, 2011
2002 Kia Sedona LX 3.5L MIL Lamp on VIN: KNDUP13142
P0431: Main Catalyst Efficiency Deterioration (Bank 2). hello all. I have this Kia that is kicking the crap outta me. the code is for bank 2 catalytic converter. When I'm reading the o2 data, the bank 1 converter is definitely weak. The bank 2 converter readings will rise on initial start up to about 7-850 mV and h...
April 06, 2011