Join Now
International Automotive Technicians Network

P0411 Diagnostic Trouble Code Discussion for July 2009

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
2000 Audi A4 Quattro 1.8L MIL Lamp on VIN: WAUDC28D1Y
P0411: secondary air injection incorrect flow. I have read a bunch of post about broken vacuum hoses, bad valves, pumps, hoses. These all check good. Here's what happens. If you let the basic setting test run it will usally, 85% of the time fail, the reading will be about 1.5g/s. If you disconnect the vacu...
July 08, 2009
2000 Audi A4 Quattro 1.8L MIL Lamp on VIN: WAUDC28D1Y
P0411: secondary air injection incorrect flow. I have read a bunch of post about broken vacuum hoses, bad valves, pumps, hoses. These all check good. Here's what happens. If you let the basic setting test run it will usally, 85% of the time fail, the reading will be about 1.5g/s. If you disconnect the vacu...
July 09, 2009
2000 Audi A4 Quattro 1.8L MIL Lamp on VIN: WAUDC28D1Y
P0411: secondary air injection incorrect flow. I have read a bunch of post about broken vacuum hoses, bad valves, pumps, hoses. These all check good. Here's what happens. If you let the basic setting test run it will usally, 85% of the time fail, the reading will be about 1.5g/s. If you disconnect the vacu...
July 08, 2009
2000 Audi A4 Quattro 1.8L MIL Lamp on VIN: WAUDC28D1Y
P0411: secondary air injection incorrect flow. I have read a bunch of post about broken vacuum hoses, bad valves, pumps, hoses. These all check good. Here's what happens. If you let the basic setting test run it will usally, 85% of the time fail, the reading will be about 1.5g/s. If you disconnect the vacu...
July 09, 2009