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P1491 Rad Fan Control Relay Circuit
what is this code p1491 on 2003 jeep liberty
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.
It will usually come on. The speed sensor on my transmission died and it displayed the check engine light.
It means that your relay is out, and has to be replaced with a new one, and once its been replaced, your check engine light will turn off in about 20 minutes or so.
check engine light reset on a 1999 Acura CL 3.0.. Just replaced the egr valve. Thx
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
It means yor getting unsufficent lift from your egr. Best thing to do is check connections possibly replace if need be. I replaced mine code went away for a lil while and then came back so could be egr or wiring or your ecu
I just had my timing belt and water pump replaced on my 2002 Avalon and had the same scenario...the VSC and check engine lights came on. Found out the Cam sensor also needs to be changed at the same time. Once that was done, the problem was cured.
A clogged or defective fuel filter will very likely cause a check engine light. If it is suspected, it should be replaced.
Faulty sensor get it replaced if not check to make sure wire isn't shorting out
P0601 is an internal engine computer failure. The engine computer will need replaced.