× 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 December 2006

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 Beetle GLS 2.0L Poor Idle Quality, MIL Lamp on VIN: 3VWCC21C3Y
P1421: sec air injection valve short to ground. ... to help. car came in with ck engine light on retrieved codes had 11 codes in memory,3 o2 sensor p0135 p0134 p0141, 1 mass air flow p0135 ,2 miss fire p0300 p0301 ,p1255 1 coolant sensor short to ground, 2 air inj. short to ground p1421 p1451 and tank vent ...
December 04, 2006