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P0411 Diagnostic Trouble Code Discussion for November 2011

Secondary AIR System Incorrect Airflow Detected

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Trouble Ticket Help Requests for DTC P0411
Help Request Posted
2009 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDS33S69
P0411: secondary air injection system incorrect air flow. i git this trailblazer 09 with 4.2 code p0411 i have changed vave,pump with dealer parts checked all hoses and connections checked up stream 02 with air command on 02 goes to 0mv phase 1 test pressure is 113kpa baro is at 101kpa phase 2 test is 118kpa.im prett...
November 01, 2011
2006 Volkswagen Rabbit 2.5 2.5L MIL Lamp on VIN: WVWBS71KX6
P0411: secondary air injection system incorrect detected. vehicle keeps popping code PO411. i am able to activate pump with scanner, I feel slight air draw from intake air port. I know there should be a good suction coming from the intake air tube.., but the problem is the pump will not come on when vehicle is cold.....
November 04, 2011
1998 Audi A6 Quattro 2.8L MIL Lamp on VIN: WAUBA34B6W
P0411: 2nd air flow fault. When system is engaged with modis, the left side is 70% and the right side is 45%, then the system shuts off, set code#po411. Since we have replace all valves, solenoids and vacuum hoses,bypas other system and swapped o2 sensor left to right, why the reading i...
November 08, 2011