× 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

P1421 Diagnostic Trouble Code Discussion for August 2008

Cold Start Emission Reduction Strategy Monitoring

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 P1421
Help Request Posted
2000 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSC29MXY
P1421: secondary air valve circut short to ground. hello friends, this vehcile has 5 fault codes. circuts shorted to ground. vehicle runs pretty normal. starts and idles with no troubles. the catalyst rattles internally. if you clear the ecm the codes reset within a few seconds. i have checked all fuses. was w...
August 12, 2008