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P1491 Diagnostic Trouble Code Discussion for March 2010

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2003 Honda Civic EX 1.7L MIL Lamp on VIN: 2HGES26793
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. I am trying to get this car thru our state inspection. I was thinking about geting a ECM from a non vtec civic and installing and reflash for imobilizer, to get rid of the P1259 code. But I have no vacuum to EGR valve, does anyone know if there is a difference...
March 12, 2010
2003 Honda Civic EX 1.7L MIL Lamp on VIN: 2HGES26793
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. I am trying to get this car thru our state inspection. I was thinking about geting a ECM from a non vtec civic and installing and reflash for imobilizer, to get rid of the P1259 code. But I have no vacuum to EGR valve, does anyone know if there is a difference...
March 12, 2010