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Is this real?

Old Dec 17, 2010 | 03:52 PM
  #1  
DaJeep's Avatar
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From: Watsonville, CA
Default Is this real?

I just found this, but I never heard of it before. I dont want to try this scarred that it will kill my jeep. Has anyone heard of this/tried this?



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


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.

Instructions :


1. To check your Jeep JK Wrangler’s DTC codes, simply insert your key into the ignition, turn it to the ‘ON’ position but do not start the engine. Then, push the key into the ignition cylinder and while holding it in, turn it to the ‘OFF’ position and then back to the ‘ON’ position (3) times straight making sure to end with it in the ‘ON’ position. It is important to keep pushing in on the key to prevent it from catching at the different positions along the way.


2. If you do step #1 correctly, all your dash lights will illuminate and your odometer will show up as a series of (6) dashes as shown in the pic to the left. If your Jeep JK Wrangler has any logged in any DTC’s, they will be displayed soon after the dashes appear. Write down the DTC(s) and check it/them against the list below to find out what they mean.


3. If your Jeep JK Wrangler has not logged in any DTC’s, the dashes on your odometer will be followed by the message ‘-done-’. Turn your key to the ‘OFF’ position and you will in fact be done.


Download the DTC’s in a PDF Format

How to Read a DTC
A DTC or Diagnostic Trouble Code is made up of 5 digits the first of which is one of the following letters:

B - Body
C - Chasis
P - Power Train
U - Network

The 2nd digit indicates:

0 - SAE
1 - MFG

The 3rd digit indicates:

1 - Fuel & Air Metering
2 - Fuel & Air Metering
(Injector Circuit)
3 - Injection Systems or Misfire
4 - Auxillary Emissions Control
5 - Vehicle Speed Control
& Idle Control System
6 - Computer Output Circuit
7 - Transmission
8 - Transmission

The last 2 digits indicate:

Fault (00-99)





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Last edited by Robar; Dec 18, 2010 at 09:35 AM.
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Old Dec 17, 2010 | 03:57 PM
  #2  
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here is a pic of it also. This is the pic that made me a little scarred to try.Click image for larger version

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Old Dec 17, 2010 | 05:00 PM
  #3  
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Yeah it might take a couple of tries, but it works
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Old Dec 17, 2010 | 05:03 PM
  #4  
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From: NORTH JERSEY
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Yep works fine. Good way to check your codes if your check engine light is on...
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Old Dec 17, 2010 | 05:52 PM
  #5  
Pape's Avatar
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From: QC, CA
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take a look here for more info on this

https://www.jk-forum.com/forums/show...agnostic-Codes
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Old Dec 17, 2010 | 05:56 PM
  #6  
RAINSTATEBEAR's Avatar
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From: Spanaway, WA
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never tried it but couldn't hurt
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Old Dec 17, 2010 | 08:28 PM
  #7  
Heavy_D's Avatar
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From: Fairbanks, AK
Default

I've done it. Works great.
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