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P1491 Diagnostic Trouble Code Discussion for January 2008

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2002 Nissan Frontier SE 3.3L no drivability probl VIN: 1N6ED27T82
P1491: EVAP Vacuum Cut Valve/Bypass Circuit Malfunction. ... Scanned and retrieved code P1491,vc cut valve fault.Searched archives and found no help there.Disconnected wire at sol. near charcoal canister, checked for voltage and ground, got 12V. I read somewhere it should have 3.2 to 4.5V.I called Nissan parts and t...
January 20, 2008