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P0431 Diagnostic Trouble Code Discussion for November 2010

Warmup Catalyst System Efficiency Low (Bank 2)

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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2000 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWND23B1Y
P0431: Warmup catalyst efficiancy below threshold bank 2. A week or so after the car got its timing belt & water pump replaced, the MIL came on. Scanned it today and got the code listed above. The customer had just bought the car and a part of the deal was a discount for the t/belt job. I have turned the MIL of a...
November 18, 2010