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P1491 Diagnostic Trouble Code Discussion for August 2006

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2000 Acura RL Premium 3.5L MIL Lamp on VIN: JH4KA9664Y
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. I have this Acura setting only the 1491 lift sensor code. I have noted the posting for EGR on the sight but they all relate to a P0401. The cleaning at the EGR valve port went well with lots of flow and vac. durring the test. The lift sensor works normal but i...
August 09, 2006
2000 Acura RL Premium 3.5L MIL Lamp on VIN: JH4KA9664Y
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. I have this Acura setting only the 1491 lift sensor code. I have noted the posting for EGR on the sight but they all relate to a P0401. The cleaning at the EGR valve port went well with lots of flow and vac. durring the test. The lift sensor works normal but i...
August 09, 2006