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P0411 Diagnostic Trouble Code Discussion for April 2012

Secondary AIR System Incorrect Airflow Detected

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Trouble Ticket Help Requests for DTC P0411
Help Request Posted
2006 Pontiac Grand Prix 3.8L MIL Lamp on VIN: 2G2WP55206
P0411: Secondary AIR System Performance. This Grand Prix is test me. Came in with Po411. Customer complaint is stalls at times & check eng light comes on. when I do the AIR valve test the pressure sensor 14 psi & 2.68 volts Air pump off & 15 psi & 2.87 volts with pump on. Air indicate...
April 24, 2012