Question about 2000 Dodge Dakota Quad Cab

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Radiator fan relay code shows up on dash. (#P1491)

Radiator fan relay code shows up on dash. I have a V6 3.9 no electric Fan. the store say it can be anything and to check my emission system.

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6ya6ya
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Posted on Jan 02, 2017

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ironhorse186
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SOURCE: 1999 Dodge Caravan running rough at idle and lack of acceleration

Here are a few things to check that aren't that exspencive to do. check you'r o2 scener and the map scencer.try tapping on the cadiletice convertor to see if can hear any rattling if there is any rattliling the cadiletice converter could be clogged and will need to be replaced.You can also have the emission control module tested to see if it working properly.

Posted on Feb 10, 2009

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SOURCE: electric radiator fan won't come on when engine gets hot

Check the fuse Located under the hood right side fuse panel 40amp.

Posted on Aug 05, 2008

mcgyver468
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SOURCE: can't find the radiator fan relay

UNDER THE HOOD ON THE DRIVER'S SIDE IS A RECTANGULAR BLACK BOX THAT SAYS FUSE AND RELAY CENTER. UNDER THE COVER IS A DIAGRAM OF ALL THE FUSES AND RELAYS TO HELP YOU LOCATE THE RIGHT ONE. HOPE THIS WAS ABLE TO ASSIST YOU. LET ME KNOW. BEST OF LUCK. THANKS FOR USING FIX-YA

Posted on May 04, 2009

keemo68
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SOURCE: radiator fan relay,2001 chrysler town country

the relay is located in the power distribution box under the hood the relay will be a square black or gray cube just pull out and make sure you rerplace it with the same type relay. refer to your owners manual for any questions regarding the fuses and relays

Posted on May 08, 2009

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SOURCE: my 1997 dodge neon sohc auto check engine light is

First, the easy way is to just bypass the relays all together. Install a switch on the inside of the car like you would fog lights. This will solve the problem of replacing thing after thing and wasting money. Just a $7.00 fix. After doing that unplug all the sensors and then the battery for at least 60 second to reset the computer. Than restart the car and the check engine light should go out, may take a day or so. Same thing with your gas cap, re-securing it will take a day or so for the light to go out. Good luck. I love my '97 neon.

Posted on May 10, 2009

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1 Answer

1999 Dodge Neon Issues (HELP)


Here's a link to the P0340 code,and P1491.Powertrain Diagnostics Manual P-1491 Radiator Fan control relay circuit
Set condition: An open or shorted condition is detected in the radiator fan relay control circuit.

Possibilities:
Fan relay ground circuit open
Fused B+ circuit open
Rad fan control relay defective
RF relay output circuit volt cycles over to batt voltage
RF relay control circuit open
RF relay ctrl rly ckt wir harness observable or intermittant defect
RF relay ctrl ckt short to ground
Defective PCM

Get out your Multimeter.

Mar 22, 2013 | 1999 Dodge Neon

1 Answer

1999 Jeep Cherokee Sport wont shift into overdrive P1491


P1491 - Radiator Fan Control Relay Circuit Open Or Shorted

When monitored: with the ignition key on, battery voltage greater than 10.0 volts and
the pcm requests the radiator fan to be turned on.
Set condition: an open or shorted circuit is detected in the radiator fan relay control
circuit.

Possible causes
radiator fan ctrl rly circuit wire harn intermittent defect
radiator fan ctrl rly circuit wire harn observable defect
radiator fan relay ground circuit open
rad fan relay control circuit open
radiator fan relay control circuit short to ground
rad fan control relay defective
pcm defective

Check ot and keep us updared.

Oct 15, 2011 | 1999 Jeep Cherokee

3 Answers

Code p1491 on a dodge caravan


Trouble code P1491 means: Radiator fan relay control circuit

Feb 28, 2011 | Dodge Caravan Cars & Trucks

4 Answers

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

Feb 25, 2011 | 2001 Chrysler Voyager

1 Answer

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

Feb 18, 2011 | Chrysler Town & Country Cars & Trucks

2 Answers

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.




zaraki_31.jpg

Nov 28, 2010 | 2003 Chrysler Town & Country

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

2 Answers

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.

Feb 24, 2010 | 2000 Dodge Caravan

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