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P1491 Diagnostic Trouble Code Discussion for June 2005

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 2.3L MIL Lamp on VIN: SALTY1245Y
P1491: EGR Valve Lift Sensor Insufficient Flow Detected. This 99 accord continues to set a code 1491 in which All Data states to be insuficent egr flow.This accord uses an egr valve similar to a GM style which does not use a vacum and is electronic.I have seen many post in the past about Honda cars clogging the inta...
June 20, 2005