× 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

P0422 Diagnostic Trouble Code Discussion for November 2010

Catalyst Efficiency Below Normal (Bank 1)

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 P0422
Help Request Posted
1999 Volkswagen Passat GLS 1.8L MIL Lamp on VIN: WVWMA63B5X
P0422: Main TWC efficiency bank1 below threshold. Just a quick question here guys. I cannot get my main scantool to communicate with this VW. I used my emission test machine to get a code. So, I cannot access my regular database in the scantool. My guess is that this refers to the Cat. Conv. I appreciate a de...
November 04, 2010