× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0431 Diagnostic Trouble Code Discussion for March 2011

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
2003 Audi A4 Cabriolet 3.0L MIL Lamp on VIN: WAUAT48H43
P0431: Cat bank 2. Hi all, car came in a few weeks ago with multiple missfire codes, massair flow code, coolant temp codes, lean codes...we replaced spark plugs and coils, new air flow meter, new coolant temp sensor, new b1 s1 o2 sensor and pcv seperator...cleared all codes car ...
March 31, 2011