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P0431 Diagnostic Trouble Code Discussion for October 2011

Warmup Catalyst System Efficiency Low (Bank 2)

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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2000 Mazda Millenia Millennium Edition 2.3L Cuts out, MIL Lamp on, VIN: JM1TA2221Y
P0431: Warmup Catalyst Efficiency Below Normal (Bank 2). Customer come in for MIL and found 3 codes listed above. This customer came in 7 months ago with MIL and surging at cruise. We fix the vehicle and customer stated problem were fix until yesterday. This time MIL flashing and no misfire were felt during test dri...
October 04, 2011
2002 Saturn Vue 3.0L Stall VIN: 5GZCZ63B13
P0431: Warmup Catalyst Low Efficiency (Bank 2). Have a very intermittent concern here guys and was wondering if anyone has come across anything similiar. 02 vue with the 3.0 engine will stall intermittenly without any reason i can tell of. It has stalled for me 2 times in the shop at idle while i'm looking ...
October 10, 2011