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P0431 Diagnostic Trouble Code Discussion for February 2008

Warmup Catalyst System Efficiency Low (Bank 2)

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Trouble Ticket Help Requests for DTC P0431
Help Request Posted
2001 Volkswagen Passat GLX 2.8L MIL Lamp on VIN: WVWBH63B21
P0431: Warm up cat efficiency below threshold bank 2. This car came back with cat efficiency codes after about a week and we suspect cat but wanted to post to see if any one had any ideas. I am nervous about changing the cat and having light come back and some other problem. Is this a common problem? VW guys, do ...
February 12, 2008