× 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 April 2013

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
2001 Mitsubishi Eclipse Spyder GT 3.0L MIL Lamp on VIN: 4A3AE85HX1
P0431: Warmup Catalyst Efficiency Low (Bank 2). ... had both P0421 and P0431 codes. I performed a cat burnout...Removed 1 plug wire from each bank and ran engine at 3000rpm for 3 minutes. Both cat monitors completed and car went home. A pending P0431 came back. idles normally but sets a P0507 high rpm.
April 23, 2013