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Unread 09-23-2008, 03:01 PM   #1
cbrann05
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bulit in dianostic?

i had a friend tell me about a built in dianostic tool in the jeeps...he said something about turning the key on and off a certain number of times and it would show some sort of code...is there any truth to this??? If so how do you read it ???

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Unread 09-23-2008, 03:02 PM   #2
Contra
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yup, all vehicles with a comp have that, have since the early eighties...
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Unread 09-23-2008, 03:18 PM   #3
igofshn
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Quote:
Originally Posted by Contra View Post
yup, all vehicles with a comp have that, have since the early eighties...
Not all but a lot of them do.
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Unread 09-23-2008, 03:48 PM   #4
N2rock
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instructions and codes here: http://project-jk.com/jeep-jk-write-...what-they-mean
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Unread 09-24-2008, 08:32 PM   #5
SETXWarrior
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I wish I had seen this last week! My check engine light came on, right after Hurricane Ike hit, and could not get the Jeep into the dealer to see what was wrong. I suspected bad gas, and intentionally ran it down as low as possible, and the light finally went out.

Are these codes retentive? Meaning, is the last code there even if the light has cleared?

I'll go try and see.
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Unread 09-24-2008, 08:43 PM   #6
SETXWarrior
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Well, apparently not retentive.

Only -------, then -done-
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Unread 09-25-2008, 02:44 AM   #7
Wolf359
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On Board Diagnostic OBDII. All late model vehicles have this.

You can generally borrow (or buy) a code reader from Autozone or other automotive parts stores. It's a nice tool to have to see why the check engine light is lit. Once you know the "error" you can replace the part and clear the check engine light. I've saved $$ using it.
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Unread 09-25-2008, 07:32 AM   #8
N2rock
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Quote:
Originally Posted by Peteman View Post
On Board Diagnostic OBDII. All late model vehicles have this.

You can generally borrow (or buy) a code reader from Autozone or other automotive parts stores. It's a nice tool to have to see why the check engine light is lit. Once you know the "error" you can replace the part and clear the check engine light. I've saved $$ using it.
you don't need a reader for our JK's- see the link I posted above. It tells how to get the code displayed on the dash, and a list of what all the codes mean
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for details and info on our JK's, check out http://n2rock.com

His: '07 Unlimited X, Jeep Green, Hardtop, auto, 5.13, 2.5" RC lift and too many mods to list

Hers: '08 X Red Rock, soft top, auto. Bunch of mods

Quote:
Originally Posted by tlgraham View Post
If you made a snuggy out of a Shamwow, ....would you have to get up off the couch to pee?
Quote:
Originally Posted by Deepskyy View Post
At this point if Obama tried to move a little to the right, he would trip over Stalin's corpse.
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Unread 09-25-2008, 09:40 AM   #9
Wolf359
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Quote:
Originally Posted by N2rock View Post
you don't need a reader for our JK's- see the link I posted above. It tells how to get the code displayed on the dash, and a list of what all the codes mean
Nice... I didn't know this about the JKs. Still a newbie with this Jeep. Thanks for the info.
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