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P0411 Diagnostic Trouble Code Discussion for June 2009

Secondary AIR System Incorrect Airflow Detected

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Trouble Ticket Help Requests for DTC P0411
Help Request Posted
2000 Cadillac Catera 3.0L MIL Lamp on VIN: WO6VR54R8Y
P0411: Secondary Air System Malfunction. ... is kickin me in the butt i keep gettin this code p0411 secondary air fault here is the thing this car has the updated air hose i replaced the air check valve with the reed valves here is the kucker when the car is first started the air pump runs and you ca...
June 12, 2009
1998 Audi A4 2.8L Misfire, MIL Lamp on VIN: WAUGD28D3X
P0411: secondary air injection. ... much at cold start more at hot idle. i can hear air woosh noise on start up and then goes away after a short while. I look over the secondery hoses and looks ok the pcv was real brittle. the manual has me checking for o2 sensor malfunction, Iv heard this n...
June 15, 2009