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Unread 10-15-2005, 07:56 PM   #1
Magic2979
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check engine light on 2000 cherokee.. can i check it my self?

well i went and got my oil changed yesterday and i changed my air filter as well and i was driving all day yesterday with not check engine light.. didnt have it going to work. went out to get something to eat while i was still at work and the damn light came on.. Is there a way that i can check the codes myself on my 2000 cherokee or do i have to bring it some where?

My jeep runs and drives fine.. no iradic(sp) idle, starts right up. so im kind of confused.. i checked my gas cap and it on tight...

Also we have had alot of rain in my area.. roads flooding and everything. last night and this morning it was real bad could i of just gotten a sensor wet or something and it is triggering the code?

thanks for any help


Mike D

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Unread 10-15-2005, 08:10 PM   #2
cjwalkeriii
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I think you can go to advance and they will read them for free. After that, you need to find what's trippthe code. Sometime there easy, sometimes you have to follow a flow chart to fig it out. Also, someone may know, but i beleive you can turn the key on and off a few times, and the dash lights will blink the code. Best of luck
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Unread 10-15-2005, 08:34 PM   #3
djshortsleeve
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Any auto parts place will read the code for you, IE VIP, Advance, Auto Zone. I had the good ole light come on last week and it came on cause I wasnt paying attention when I got gas and didnt click the cap back on. So you see it could be anything.
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Unread 10-15-2005, 08:47 PM   #4
Ghetto2315
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Since your XJ is running fine, what I would do is disconnect the negative terminal of your battery for 10-15 minutes to reset your PCM. That will turn off the MIL light.

If the MIL light comes back on, then you know you have a problem... if it doesnt, you're good to go
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Unread 10-16-2005, 01:37 PM   #5
Matt Gertsch
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Quote:
Originally Posted by cjwalkeriii
Also, someone may know, but i beleive you can turn the key on and off a few times, and the dash lights will blink the code. Best of luck
I don't think this works on the later models.
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Unread 10-16-2005, 07:31 PM   #6
Magic2979
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anyone know where i can get a list of what the error codes are so that way i know is wrong wen i have the people at autozone pull the codes tomorrow..

Thanks

mike
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Unread 10-16-2005, 07:48 PM   #7
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Quote:
Originally Posted by mgertsch
I don't think this works on the later models.
yes that does work on all xj's with the digital odometer, all you need to do is cycle the key 3 times and on the third keep on and the codes will flash where your milage is read.
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Unread 10-17-2005, 01:09 AM   #8
Mateo94XJ
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Quote:
Originally Posted by Magic2979
anyone know where i can get a list of what the error codes are so that way i know is wrong wen i have the people at autozone pull the codes tomorrow..

Thanks

mike
http://www.allpar.com/fix/codes.html

They should be able to tell you what they are, on an OBDII setup they will scan the codes using a scantool and give you a printout on receipt paper. Should tell you what system is having trouble, but not necessarily what cuased it.

My money's on you didn't tighten your fuel cap - it happens.
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Unread 10-17-2005, 08:25 AM   #9
Dean O
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When they pull the codes they'll tell you what it is. I had this come up on mine a few months back. They told me it was the gas cap. I tighten it down as best I could, just as I have been doing for 2.5 years and still kept having the light come back on at least once a week. I even went so far as to buy a new gas cap, that didn't solve it so I put the old one back on. For some reason, when I switched back to my regular gas cap I haven't had the problem since. I just decided it must be a Jeep quirk
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Unread 10-17-2005, 08:37 AM   #10
Vertisce
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If you have a 2000 model it will be the same as my 2001. You can do 2 things to get the code.

Turn the key on and off and back to on 5 times without starting the engine.
or...
Hold down the odometer reset button while you turn your key to the on position without starting the vehicle. This will make it run a diagnostic and it will come back with a 2 digit code for you.

If you wanna get the REAL code that tells you exactly whats wrong go to Checker or AutoZone and get them to read it for ya.

Disconnecting the battery for 15 mins is a waste. Wil Badger gave me a good pointer...since the PCM can only hold info for about 15 starts...just start your engine and turn it off about 16 times and see if it resets.
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Unread 10-17-2005, 08:45 AM   #11
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Quote:
Originally Posted by Cryosis
Disconnecting the battery for 15 mins is a waste. Wil Badger gave me a good pointer...since the PCM can only hold info for about 15 starts...just start your engine and turn it off about 16 times and see if it resets.
Or how bout not waste a bunch of freakin time and just go get the codes read for free? Disconnecting the battery doesn't do anything on OBDII and turning your key numerous times doesn't do anything either.
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Unread 10-17-2005, 09:29 AM   #12
Vertisce
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Quote:
Originally Posted by wipedawg
Or how bout not waste a bunch of freakin time and just go get the codes read for free? Disconnecting the battery doesn't do anything on OBDII and turning your key numerous times doesn't do anything either.
Wow...thats odd...so your saying that when I tried it and it worked...that it didnt really work?

Yeah whatever...so anyway...

Both those methods will essentially reset your computer but...if you have a problem it will more than likely come back right away or within a 50 miles or so. I know I have unplugged my battery and tried resetting my computer in many ways and it just keeps coming back because I have an issue with the damned thing that needs to be fixed.
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Unread 10-17-2005, 11:20 AM   #13
AZ Jeff
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Quote:
Originally Posted by Cryosis
If you have a 2000 model it will be the same as my 2001. You can do 2 things to get the code.

Turn the key on and off and back to on 5 times without starting the engine.
or...
Hold down the odometer reset button while you turn your key to the on position without starting the vehicle. This will make it run a diagnostic and it will come back with a 2 digit code for you.
This method will NOT WORK on a 2000 model year XJ.
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Unread 10-17-2005, 12:12 PM   #14
Vertisce
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Quote:
Originally Posted by AZ Jeff
This method will NOT WORK on a 2000 model year XJ.
Thats odd...worked fine on my buddies 2000 XJ.
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Unread 10-17-2005, 12:52 PM   #15
mylt1
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its worked for me to. several times on a 2000 xj 2wd. its my towns police car and has worked every time but its three times not five. never tired the reset button and turn the key.
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