Question about 1999 Jeep Grand Cherokee

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Figured out how to get the code for the engine light and the code Is P1491, that means something about the radiator fan control relay circut. So I'd like to know is it easy to fix and how much is the part?

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I don't know how much it costs, but there are 2 ways to replace it. The right way, which involves taking off both headlamps, the grille, the grille support, the bumper cover and some big support bracket for the bumper cover. And then there's the easy way. Remove the right headlamp housing and right about the middle of the cover underneath where the housing was, smack it with the ball end of a ball peen hammer (no joke). Now you should be able to see where the relay is (it bolts to the frame or bumper or something). Smakck it again directly above the relay and remove it. If you're careful with this, the hole should be covered up by the headlamp housing when you put it back.

Posted on Apr 14, 2009

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What is code 35 and 76 for 1993 grand cherokee


35 is p1491 which is Radiator fan control relay circut (bad relay).... An open or shorted condition detected in the low speed radiator fan relay control circut

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Code p1491 on a dodge caravan


Trouble code P1491 means: Radiator fan relay control circuit

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What does the diagnostic test code P1491 means?


Hello jhonney21,

The P1491 is Radiator fan control relay circuit code. It is set if an open or short circuit is detected in the radiator fan relay control circuit.

Regards,
netvan

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I have a chrysler 2003 town & country - the check engine light came on and it has 2 codes - P1684 & P1491. Can you tell me what the problem might be?


P1491 Radiator fan relay control circuit, Most likely you need a fan relay or fan module.
P1684 Battery was disconnected, this code will not turn on CEL

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I was in a minor fender bender ( bumped the car in front of me and did little cosmotic damage.) After that my check engine light came on. The code is P1491 Manufacturer Control Axillary Emissions...


The DTC (Data Trouble Code) P1491 for Chrysler-Jeep is for the Radiator Fan Control Relay Circuit, and the radiator fan control relay is located between the radiator and the AC condenser, and there is the possibility that a collision could have damaged the radiator control relay or the wiring. Here is an image of a chrysler radiator control relay to help assist you.




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2 Answers

P1491 diagnostics code for 2003 Jeep Grand Cherokee



Trouble Code: P1491 You PCM does not sense current to radiator fan when it turns it on. Is the fan coming on or not? Usually not when you have this code. Problem can be with the fuse, relay, wiring or fan itself. First check the fuse. If good, next try swapping the relay with another one in the engine compartment relay box, such as the horn relay.
Let the car warm up and see if the fan will come on. If yes, get a new relay. If not, either use a test light to see if there is voltage at the fan connector when the engine is on and hot, or else test the fan motor by hotwiring it to the battery. If none of this works, please get back to me for how to troubleshoot the wiring.


Radiator Fan Control Relay Circuit Malfunction
Possible Causes:


Radiator fan control relay circuit is open or shorted to ground Radiator fan control relay circuit is open (test power to IGN) Radiator fan control relay is damaged or has failed PCM has failed

Nov 10, 2010 | 2003 Jeep Grand Cherokee

1 Answer

Have a code p1491 in my dodge neon 1995 what is it


Trouble code P1491 means: Radiator fan relay control circuit problem.

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Check Engine Light


It is for the radiator fan relay control circuit.It means there is a problem in the cooling fan relay circuit.Could be the relay,wiring,or the fans.Check the fuses and relay over if it looks good then you have to take it in to get it diagnosed.You need a scan tool and you also need to know how to use a multimeter.Hope this helps.Good luck.

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