Thanks to the advent of technology, just about every single part on your new Jeep JK Wrangler is wired up to a computer. And, if anything goes wrong with any one of these parts, your Jeep’s computer will make a note of it and/or even let you know about it by illuminating a Malfunction Indicator Light (MIL for short or ‘check engine’ light) or icons on your dash. Unfortunately, the MIL or other icons won’t tell you a whole lot other than the fact that your Jeep is having some kind of a problem and unless you take your Jeep into the dealership or have a OBDII reader handy, you’re pretty much out of luck, right? Wrong. As luck would have it, the JK Wrangler’s come with a Diagnostic Trouble Code (DTC) reader built right into the dash and you can access them by following the 3 simple steps below. Once you have the DTC code(s) in hand, check it/them against the list below and you will be able to find out exactly what problems your Jeep is having.

Jeep JK Wrangler Diagnostic Trouble Codes - DTC
How to Check Them & What They Mean

 

And here I thought I was getting an ODBII reader for Christmas.

 

Great find!!

This might come in handy one day. I'm gonna print off a copy to keep in the Jeep and one for the garage.

 

What's a SKREEM?

 

I think this is what it is:

Sentry Key Remote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM)

 

this is GREAT no reader required


thanks for the great info again Eddie

 

I couldn't get it to work by going to "Off". Actually, the key has four settings, LOCK, ACC, ON, START. For me, going from ACC (not OFF, not LOCK) to ON three times is what does the trick.

Here's a bit of totally worthless trivia - I discovered quite by accident that any multiple of 3 will cycle the codes.

More worthy trivia:

https://www.jk-forum.com/forums/show...4&postcount=15

 

hmm.. chrysler has been doing these display codes for a while... how did you find what the codes represent?

 

The factory service manual of course. Only, they weren't all in the same place for some stupid reason or another so WOLette had to scour the whole thing to find them all

 

sweet find thanks, can we make this sticky?