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P1491 Diagnostic Trouble Code Discussion for November 2004

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2002 Dodge Ram 1500 Truck 5.9L No Start VIN: 1D7HA16Z62
P1491: Cooling Fan Control Relay Circuit Malfunction. ... ago for the same no start condition. When we get it to the shop it starts. It cranks OK, has good fuel pressure but doesn't seem to have good spark. When you let off the key it will run backwards. Always seems to happen when it's raining but I'm not sure t...
November 30, 2004
2002 Dodge Ram 1500 Truck 5.9L No Start VIN: 1D7HA16Z62
P1491: Cooling Fan Control Relay Circuit Malfunction. ... ago for the same no start condition. When we get it to the shop it starts. It cranks OK, has good fuel pressure but doesnít seem to have good spark. When you let off the key it will run backwards. Always seems to happen when itís raining but Iím not sure t...
November 30, 2004