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P1491 Diagnostic Trouble Code Discussion for October 2009

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
1999 Honda Accord EX 3.0L MIL Lamp on VIN: 1HGCG1653X
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. ... user of this site but have had good advice in past times. So this honda sets this p1491 egr code repetedly, looks like the egr valve was replaced previously. i did test it as per diagnostic charts and the valve opened but engine did not stumble, so off cam...
October 05, 2009