× 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

P0411 Diagnostic Trouble Code Discussion for August 2011

Secondary AIR System Incorrect Airflow Detected

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 P0411
Help Request Posted
1999 Audi A4 Quattro 2.8L Excessive Emissions, MIL Lamp on VIN: WAUED28D7X
P0411: Secondary aire injection incorrect flow. Vehicle came in with P0411 secondary air flow incorrect. Had some failing vacuum lines so those and the vacuum solenoid were replaced. 6 weeks later the code came back and the combi valves were replaced. The air pump can be turned on manually and it appears to...
August 05, 2011