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  #1  
Old 12-03-2011, 01:56 PM
mopar02 mopar02 is offline
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Anyone know what would cause a 1491 code?
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Old 12-03-2011, 02:01 PM
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Doing a quick goggle it looks like it has something to do with your "Rad Fan Control Relay Circuit". Do you have A/C with an electric fan, perhaps see if the fan is working when the AC is on. What year is your truck, it's not showing up in your profile?
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Old 12-03-2011, 06:52 PM
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Check your Relay for your Electric Fan if the radiator does not have a Electric fan Check you A/c as stated above. Mostly this comes up on relay soon to fail or the Motor it self well. Take some time check all your relay and fuse.
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Old 12-03-2011, 09:08 PM
mopar02 mopar02 is offline
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Thanks guys for the quick response. Turns out the fuse for the cooling fan was blown. Replaced the fuse and so far so good.
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Old 12-03-2011, 09:19 PM
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Nice to hear you got it fixed up. The DTC codes are actually very helpful in diagnosing problems. My Sons Lancer posted a P0703 which pointed to the brake switch. It actually had two burned out brake lights and only the center LED light was working. So the check engine light came on because the brake lights were not all working. I was impressed that it warned us about the problem so we could fix it.
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