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P0431 Diagnostic Trouble Code Discussion for December 2004

Warmup Catalyst System Efficiency Low (Bank 2)


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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2000 Audi A4 Quattro 2.8L cat problem VIN: WAUDH68D1Y
P0431: cat efficiency bank 2. 2 codes present p0421 cat efficiency bank 1 and p043 cat efficiency bank 2. codes return about 3 month's after clearing codes. car runs fine. no complaints. is it possible that both cats are bad after only 68,000 miles.
December 16, 2004
2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEC13Z32
P0431: camshaft sensor error. Hi I have this Tahoe in with a check engine light on with a cam sensor error code. I Replaced the sensor because my only diag. tool is my scanner and Alldata and Alldata has very limited info on checking this code. The car does have an extended crank times som...
December 30, 2004
2000 Audi A4 Quattro 2.8L cat problem VIN: WAUDH68D1Y
P0431: cat efficiency bank 2. 2 codes present p0421 cat efficiency bank 1 and p043 cat efficiency bank 2. codes return about 3 month's after clearing codes. car runs fine. no complaints. is it possible that both cats are bad after only 68,000 miles.
December 16, 2004
2002 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEC13Z32
P0431: camshaft sensor error. Hi I have this Tahoe in with a check engine light on with a cam sensor error code. I Replaced the sensor because my only diag. tool is my scanner and Alldata and Alldata has very limited info on checking this code. The car does have an extended crank times som...
December 30, 2004