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P0431 Diagnostic Trouble Code Discussion for July 2009

Warmup Catalyst System Efficiency Low (Bank 2)

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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2004 Audi RS6 4.2L MIL Lamp on VIN: WAUPV64B14
P0431: warm up catalyst b2 below threshold intermittent. Hey guys, this RS6 V8 twin turbo is a tight fit. For this code is says to replace the catalyst. The first item in the manual says to REMOVE ENGINE! Queations - Is there a reflash for this code? I know on the 2.7 biturbo's they had a reflash for this but I can'...
July 29, 2009