Join Now
International Automotive Technicians Network

P0431 Diagnostic Trouble Code Discussion for July 2009

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
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
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