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P0411 Diagnostic Trouble Code Discussion for September 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, P0411 VIN: W06VR54R2Y
P0411: Secondary Air System Malfunction. fixed two leaks on injection system p0411 still returns. the pump runs the vac. solenoid for by pass valve opens the valve its self will open. i have to do this manually as there are no bi directional controls for this vehicle with the snap on solis pro. using...
September 30, 2009