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Old 12-29-2017, 09:44 PM
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Check Engine Light Turning On in Cold Weather?

Anyone else have this issue before? We have been having some cold weather in the Northeast this week, and my Check Engine Light went on with a minute of driving, but it drives fine.

The Light went on in Late November of this year but my 2010 Unlimited Sport was going in for Service within two weeks, and it was driving fine, and by the time it went in for Service it turned off.

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Old 12-29-2017, 10:06 PM   #2
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There are literally hundreds of things that can cause the check engine light illuminate. When the light turns on, there will be a trouble code (or codes) stored in the computer. You need to know the code before you can figure out what's going on.

Below is a YouTube video showing how to display the code on your instrument panel. (This doesn't work all the time).

https://www.youtube.com/watch?v=GOgQTyDZ14s

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Old 12-30-2017, 12:11 PM
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There are literally hundreds of things that can cause the check engine light illuminate. When the light turns on, there will be a trouble code (or codes) stored in the computer. You need to know the code before you can figure out what's going on.

Below is a YouTube video showing how to display the code on your instrument panel. (This doesn't work all the time).

http://www.youtube.com/watch?v=GOgQTyDZ14s
No codes are appearing! Every time I go out I check to see if there is any chance and nothing, keep getting ------.
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Old 12-30-2017, 01:16 PM   #4
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I was hoping it would work for you.. But as I mentioned, that method doesn't always provide results... If the check engine light is on, there is a code set.

You'll have to try a places like Pep Boys.. Many will read the code with an OBDII code reader for free.
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Old 12-30-2017, 02:53 PM   #5
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I have had the check engine light come on but have never been able to successfully use this method of getting the Jeep's computer to tell me what codes are stored either. There were codes stored when using a professional code reader. I have been thinking about buying a code reader since they are not too expensive, just don't know which one to buy that will give good information and reset codes as well. Obviously I haven't spent time to research this but will soon and buy a good code reader that works on most cars.
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Old 12-30-2017, 05:39 PM   #6
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I would suggest holding the trip meter button down while cycling the ignition switch three times.
That might get the codes up. But going to any Auto Zone they too can hook up a reader and get the code just as easy.
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Old 12-31-2017, 09:41 AM   #7
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get a code scanner... if you have a android device you can get the OBD2 bluetooth adapter and the 7$ torque pro app

https://www.amazon.com/Veepeak-Bluet.../dp/B011NSX27A

https://play.google.com/store/apps/d...l.torque&hl=en
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Old 12-31-2017, 02:41 PM   #8
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Do you expect us to tell you what code you have? Get a scanner, read the code, then go from there.
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Old 01-01-2018, 02:29 AM
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Do you expect us to tell you what code you have? Get a scanner, read the code, then go from there.
No... Was just wondering if anyone else on the Forum has had the issue with the Check Engine Light coming on in the Cold Weather but not having any issues with how it drives/operates. Like I originally said the Light went on when we had a week of cold weather in November in the Northeast, turned off and and now it has turned on again and currently the Northeast has had a week of sub 30 Fahrenheit.

Between the Light turning Off and On, I did bring my JKU to the Dealer for a Real Axel leak, it was fixed, and the Dealership said there were no other issues.
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Old 01-01-2018, 07:19 PM   #10
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It's irrelevant if someone had a check engine light come on in cold weather. There are hundreds of different codes, and even more reasons any single code can be triggered. So if someone did have the CEL come on, it could be for a different code and different reasons than yours. You need to read your code and then maybe see if anyone had the same code come in under same cicrumstances. How hard is it to get an obdii scan tool in 2018?
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Old 01-02-2018, 12:57 PM
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It's irrelevant if someone had a check engine light come on in cold weather. There are hundreds of different codes, and even more reasons any single code can be triggered. So if someone did have the CEL come on, it could be for a different code and different reasons than yours. You need to read your code and then maybe see if anyone had the same code come in under same cicrumstances. How hard is it to get an obdii scan tool in 2018?
Alright chill dude. Was just asking a simple question to the Forum, isnt that what this website is for?
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Old 01-02-2018, 06:53 PM   #12
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I recall triggering a CEL during a cold spell several years ago. I forgot what it was but it eventually went away.


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Old 01-03-2018, 05:29 PM   #13
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prob your coolant temp sensor and or thermostat sticking
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Old 01-03-2018, 08:24 PM   #14
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Yes, the forum is for asking questions just like you have done. The problem is that since there are a ton of codes, it could be one or a number of issues. If you go to a chain parts store, most advertise that they'll check for codes at no cost. If they pull a code(s) report back. Good luck.
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Old 01-04-2018, 12:41 AM   #15
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Alright chill dude. Was just asking a simple question to the Forum, isnt that what this website is for?
If you come to ask for help, then don't expect people to magically read your codes for you over the internet. Help us to help you. If you don't want to, because you think that doesn't apply to you, then you can ask irrelevant questions until the cows come home, no one will be able to help you. Your call, and your Jeep. My Jeep doesn't have any CEL's and runs great. So I'm not the one to sweat over this.
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Old 01-05-2018, 08:04 AM
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If you come to ask for help, then don't expect people to magically read your codes for you over the internet. Help us to help you. If you don't want to, because you think that doesn't apply to you, then you can ask irrelevant questions until the cows come home, no one will be able to help you. Your call, and your Jeep. My Jeep doesn't have any CEL's and runs great. So I'm not the one to sweat over this.
Again chill dude. Never asked anyone to magically read my codes, just asked a simple question to the forum, and obviously it wasn’t irrelevant because someone in this forum did have this happen to them before. If you are not going to be helpful don’t reply to a thread.
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Old 01-05-2018, 08:07 AM   #17
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Just stop by any auto parts store. They code scan for free and are happy to do it.
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Old 01-05-2018, 08:21 AM   #18
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play nice folks... no need for name calling or otherwise.
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Old 01-05-2018, 08:28 AM   #19
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If you come to ask for help, then don't expect people to magically read your codes for you over the internet. Help us to help you. If you don't want to, because you think that doesn't apply to you, then you can ask irrelevant questions until the cows come home, no one will be able to help you. Your call, and your Jeep. My Jeep doesn't have any CEL's and runs great. So I'm not the one to sweat over this.
vitamin B, try being just a little more helpful. if you're frustrated with a lack of information, request that specific information or try to be a bit more polite about how you post.

this is a forum folks come to for help. not for flaming, there are plenty of other jeep forums for that.
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Old 01-05-2018, 08:31 AM   #20
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Tabber? From the Jeep Cherokee Forum?
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Old 01-05-2018, 08:35 AM   #21
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Tabber? From the Jeep Cherokee Forum?
i've spent some time over there, but it's been years - if anything recent, then it's a different guy.
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Old 01-05-2018, 08:52 AM   #22
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Not recent.I have not been over there for years either. I just remember a sweet Cherokee you had up for sale on that forum. I think it was light blue if I recall correctly. Was looking at the forum since I was looking to put a Cherokee at our camp.
Back to the OPs issue now. Hope he stops at an auto parts store. Lights are warning signs and its important to get them addressed so it doesn't turn into something more serious.
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Old 01-05-2018, 09:25 AM   #23
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Not recent.I have not been over there for years either. I just remember a sweet Cherokee you had up for sale on that forum. I think it was light blue if I recall correctly. Was looking at the forum since I was looking to put a Cherokee at our camp.
Back to the OPs issue now. Hope he stops at an auto parts store. Lights are warning signs and its important to get them addressed so it doesn't turn into something more serious.
that was me and yes, good idea to stop by an advance auto or pep boys or something similar. you're right, they're more than willing to come out and plug a code reader into your vehicle.

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