Join Now
International Automotive Technicians Network

P1491 Diagnostic Trouble Code Discussion for June 2004

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2002 Dodge Ram 1500 Truck 5.9L MIL Lamp on VIN: 1D7HU18Z62
P1491: Cooling Fan Control Relay Circuit Malfunction. ... info problem and in hopes that it has appeared before to someone else, This truck was purchased at auction with the CEL on- Scan test is OBD@ Generic as our Snap on scanner is waiting for update info for '02+ so info is limited- Recieved code P1491- Unknow...
June 03, 2004
1999 Dodge Neon R/T 2.0L MIL Lamp on VIN: 1B3ES42Y8X
P1491: Radiator Fan Control Relay Circuit Malfunction. ... code p1491(rad fan control relay circuit) 1: erased code, road test confirms code 2:cycle fans with scanner, fans operate ok 3:ck wiring and connections ok 4:eraced code again run car in shop till fans go on (101 deg celcius) 5:at this time mil does not go...
June 15, 2004
2002 Dodge Ram 1500 Truck 5.9L MIL Lamp on VIN: 1D7HU18Z62
P1491: Cooling Fan Control Relay Circuit Malfunction. ... info problem and in hopes that it has appeared before to someone else, This truck was purchased at auction with the CEL on- Scan test is OBD@ Generic as our Snap on scanner is waiting for update info for '02+ so info is limited- Recieved code P1491- Unknow...
June 03, 2004
1999 Dodge Neon R/T 2.0L MIL Lamp on VIN: 1B3ES42Y8X
P1491: Radiator Fan Control Relay Circuit Malfunction. ... code p1491(rad fan control relay circuit) 1: erased code, road test confirms code 2:cycle fans with scanner, fans operate ok 3:ck wiring and connections ok 4:eraced code again run car in shop till fans go on (101 deg celcius) 5:at this time mil does not go...
June 15, 2004