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P0491 Diagnostic Trouble Code Discussion for October 2007

Secondary AIR System Insufficient Flow Detected (Bank 1)

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Trouble Ticket Help Requests for DTC P0491
Help Request Posted
2004 Dodge Stratus SXT 2.4L MIL Lamp on VIN: 1B3EL46J14
P0491: AIR System Performance. ... inspection. MIL code P0491 Secondary Air Intake System. Recieved detailed diagnosis from Chrysler and everything seems to test OK. Chrysler techs not real familiar with system. Suggested changing relay which did and cleared codes but came back on next day....
October 27, 2007