P1491 Rad Fan Control Relay Circuit
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Code P1491 means Rad fan control relay circuit. on a 2002 Ram check the fuse for the ac condenser. it is a 25 am fuse and it is located in row closest to rad and closest to engine. if fuse is blown it will look a milky colour.I know this for a fact as I just had to change mine as it had blown. The condenser fan motor is probably going bad and that is what blows the fuse.
P1491 - Radiator Fan Control Relay Circuit
Google this- "2001 Chrysler T&C P1491"
P1491 = radiator fan relay circuit
Trouble code P1491 means: Radiator fan relay control circuit Can I get a location?
Trouble code P1491 means: Radiator fan relay control circuit
Trouble code P1491 means: Radiator fan relay control circuit
in my haines manual, it says a p1491 is a vaccum cut bypass valve or circuit fault.
Code P1491 Means: EGR Valve Lift Insufficient Detected EGR Valve needs to be replaced
The P1491 code on a 2003 Jeep Liberty indicates a problem with the EVAP (Evaporative Emission Control) system, specifically related to the leak detection pump. This code typically points to a malfunction in the pump itself or issues with its electrical connections. As a result, the vehicle may not properly detect fuel vapor leaks, which can lead to increased emissions and potential failure during emissions testing. It's advisable to inspect the pump, wiring, and related components to address the issue.