Jeep JK Wrangler Diagnostic Trouble Codes
DTC How to Check Them

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.

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)



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.

Click here to see what your code means: DTC Codes List

112 Comments so far

  1. cd thompson December 7th, 2007 10:45 am

    okay what is p0017,pood4, and p0018

  2. wayoflife December 7th, 2007 10:52 am

    From what I can tell, both P0017 and P0018 are the same as P0016 - Crankshaft Position - Camshaft Position Correlation, except that 17 refers to “Bank 1 Sensor B” and 18 refers to “Bank 2 Sensor A”. Unfortunately, I do not know what P00D4 is. Sorry.


  3. hiteck December 7th, 2007 11:48 am

    Thanks for posting this! Hopefully I won’t need it for some time, but I’m sure this will definately be useful in the future

  4. AZJeeper December 11th, 2007 11:23 am

    If you take things literal, there is no “OFF” on the ignition switch. You have “LOCK”, “ACC”, “ON”, and “START”. Follow the instructions above, but cycle quickly between ACC and ON. Works for me every time.

  5. cd thompson December 11th, 2007 12:06 pm

    thanks for your help eddie

  6. Paul in VA December 13th, 2007 9:19 pm

    OK I have tried this SEVERAL times and it does not work ! WTF ??
    Even when the key is pressed into the ignition I can still feel the detent positions between off (lock) and on….the key does not stop at the detents, it’s just that I can feel that they are there. Is some thing wrong with my ignition switch? Does this work on all JK’s? I have a 2007 2 door Rubicon 6 speed that I purchased in Feb-07. got any tips??

    Thanks, Paul

  7. wayoflife December 13th, 2007 10:05 pm

    Hey Paul, feeling the positions is normal. Did you make sure to start from the on position (last spot just before your starter begins to crank) and did you make sure to do this rapidly? Also, did you try what AZJeeper suggested?


  8. Everett Henderson of Tampa December 21st, 2007 10:37 pm

    Thanks SO much for this. I have had check engine lights come on no less than 10 times .._ this is quite annoying for a JEEP 6000 miles on it. CHECK ENGINE… what in the H_E Double_Toothpicks is that supposed to mean? This should be i the owners manual.

    Thanks Again. Ev

  9. Deisel220 December 23rd, 2007 10:15 pm


    Thanks for giving us backyard mechanics the info….

    I hate taking my baby into a dealership, or worse a mechanic….UNHHHHHH

  10. KI4VQK February 1st, 2008 11:32 pm

    Any way to clear out codes?

  11. Ron February 2nd, 2008 2:49 am

    How do I reset the codes?

  12. wayoflife February 2nd, 2008 12:29 pm

    To reset your codes, you can disconnect your negative battery lead for about 5-10 min. When you hook it back up, they will be gone and your computer will start learning again from there. Or, if you have something like a Hypertech Max Energy Power Programmer or ACCU-Pro, they can clear out your codes as well.


  13. PURDY MITCHELL February 22nd, 2008 12:30 pm



  14. austin760 March 21st, 2008 4:31 pm

    what is P0000? not seeing it anywhere? thanks

  15. Big Kahuna March 28th, 2008 6:26 pm

    I also have the P0000 code as per my max energy. What is it?

  16. Morris April 20th, 2008 12:36 pm

    Have a cod P0003, can’t find it!?

  17. johnnyg129 April 21st, 2008 11:49 pm

    Also have the P0000 per the “max energy” Do you just clear it?

  18. chris gerding June 2nd, 2008 3:27 pm

    I also have a P0000 code.Cleared it but keeps coming back.

  19. Snippy August 20th, 2008 4:28 pm

    I had a P0018 code, though all 5 of my tires are at 26psi (35″) and yet none of the low pressure DTC’s were shown on my Hypertech even though the TPMS dash light stays on every time I start the vehicle.

  20. Khaiwi August 26th, 2008 4:51 am

    Hi, I connected the Hypertech power programmer and got U0154 LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE …… wonder what should this mean????

    Thanks in advance

  21. albert December 10th, 2008 12:21 am

    i just bought a new wrangler unlimited rubicon in indonesia. i cannot find how to deactivated the function when i unlock the door from the remote control the headlamp is on automaticly for about 1 min. thank you for ur help

  22. Michal Czech republic December 11th, 2008 1:02 pm

    I have code …… and after 2 sec No bus -wonder what should this mean????

  23. Redrock February 26th, 2009 11:55 pm

    I got 3500 miles on my 2008 Wrangler Unlimited X and it kept telling me to change the oil. I finally got a check engine light and changed the oil after that. Went through this procedure to find out why the check engine light came on. It seemed to work great and all it says is “change oil”…no code. Is that normal?

  24. Curious March 2nd, 2009 2:35 pm

    I have several codes not on the list. All of them have the 3rd digit as ‘0′ which isn’t on the lists above. They are all ‘P00xx’. Is there a portion of the DTC list not printed here?

  25. wayoflife March 2nd, 2009 3:20 pm

    sometimes if you have a reoccuring trouble code, the last digits indicate how many times the problem has been experienced.

  26. brian russell March 6th, 2009 11:11 am

    i have a hypertech max energy power programer and the dtc code that can up was P0000 can you tell me what this means thxs

  27. Tim Schroeder March 14th, 2009 7:22 pm


  28. Tim Schroeder March 14th, 2009 7:26 pm

    LOST COMMUNICATION WITH CLUSTER/CCN - u0155 -2005 jeep rubicon - 6 cyl - 6 speed

  29. J stone April 6th, 2009 3:52 pm

    P0562 System Voltage Low does this mean that I need to change the batteries on a 2007 4 door wrangler?

  30. ken May 21st, 2009 12:15 am

    this is great news.
    my old 90 daytona has the same thing where i can check the codes now i can do it with my jeep too!! yay

  31. Jr July 29th, 2009 12:07 am

    This is good stuff got my issue fixed and did it all myself..woohoo

  32. Isaac August 8th, 2009 1:18 pm

    Has anyone in this forum ever get codes P0203 and P0303 at the same time and how did you fix the problem? Thanks in advance.

  33. gator August 11th, 2009 11:17 pm

    azjeeper’s suggestion worked for me.

    Start in the ON position. Then cycle back to ACC and up to ON three times fast (within 2 seconds or so), ending in the ON position.

    I’m having intermittent starter issues. They replaced the ECM (I think) a while back when it wouldn’t start at all, and now have ordered a WCM.

  34. mark johnson November 2nd, 2009 1:40 am

    I had a hot oil warning after running in soft sand, I’m assuming it meant trans as the water was normal and that a extra cooler will keeping it from happening. again

  35. leticia November 12th, 2009 1:11 am

    I just bought a 2009 wrangler and as soon as I got home a “hot oil” indicator light came on? I cannot find this issue in the manual…please help!!

  36. wayoflife November 12th, 2009 1:26 am

    typically comes on when climbing a long hill and your tranny has to keep shifting. try shifting to 2nd or 1st next time.

  37. Paul December 14th, 2009 12:13 am

    What if I get the —done— message but the CHECK ENGINE light remains on?? Thanks…

  38. wayoflife December 14th, 2009 12:45 am

    disconnect your battery for about 15min. that should clear it.

  39. cory December 18th, 2009 8:11 pm

    I got the p2504 code, which is charging system output high, I checked the output to the battery and it was sitting right below 14.4 volts which is right where it should be. Just wondering if i could get a little more info on this issue if at all possible. Thank you

  40. greg January 17th, 2010 4:41 pm

    Hi Everyone,
    I have a problem with my instrument cluster. For no apparent reason, the cluster had no power to it one morning when I started up my 07 JK. I disconnected the neg terminal on the battery and waited approximately 10 minutes. Reconnected. Dome light came on, instrument cluster had power. As soon as the dome light timed out though, instrument cluster lost power again. Checked schematics and am down to the “immoblizer” circuit. Is this something that I have to take to the dealer to get checked out on thier diagnostics?

  41. SmilinVamp March 31st, 2010 3:28 pm

    HOTOIL - part of a recall I just had to do. Turns out they’ve discovered that the Auto Transmission isn’t really good enough for the Jeep (Surprise). So instead of giving everyone a nice new Tranny cooler… they just added a fancy light to tell you the Tranny is hot.

    They include an addendum to the owners manual - when the HOTOIL indicator lights, pull over and idle in neutral until the light goes out. Then carry on… nice of them huh?? (I ain’t kiddin’)

  42. tina April 22nd, 2010 11:03 am

    Hi guys I need your help- My baby is pulling the code P0016 crankshaft/camshaft timing misalignment (2005 Wrangler Sport) and we have replaced both the crankshaft and camshaft sensors ($70.00 later) and it continues to pull the same code. I have done the research and have found the there was a service bulletin issued (E05 or NHTSA Item# 10013784, Oil Pump drive gear may wear out prematurely and cause engine failure due to loss of oil pressure) but I have not have a problem with losing oil pressure. Can anyone tell me if an Oil Pump Drive Gear is the same as an Oil Pump. I am thinking that it is not and that the Oil Pump Drive Gear is probably located somewhere around the camshaft but I am not sure. Can someone please tell where it is located and how hard to replace on my own without having to take it to a shop. Thanks so much in advance for all of your help and experise :)

  43. Jeep Tech May 14th, 2010 8:19 am

    The same gear that drives the oil pump also drives the Distributor/Cam sensor…

  44. Dave May 18th, 2010 12:37 pm

    I’ve had the engine light come on about 4 times lately. Drive it for awhile and it goes of. Drive it again a couple times and it comes on again. Decided to check code this time. it is:

    And this means…???

  45. Briou July 10th, 2010 10:12 pm

    So both my battery and my alternator both went out on my 07 jeep jk…I thought? I replaced both of them and now I am getting all kinds of electrical trouble. When I am driving my cluster goes nuts…speedo and tach both start bouncing and every possible engine light comes on. I checked this with my Hypertech programmer and I got the following code, some of them are listed here but others are not. P0000, U0001, P30D1, P1330, U1403, B30D1, P0CB0, U110E. Please I need some help. Thanks

  46. wayoflife July 11th, 2010 11:47 am

    there was TSB to have the wiring harness replaced in the 07’s. did you ever have this done?

  47. yoyo July 23rd, 2010 7:01 pm

    HELP pls
    i did the diag. i get the words DONE but the electronic throttle control light stays on for a couple secs. could this be my kille. The 07 jeep wont start, it clicks. I tried disconx the luck.. Battery has plenty juice. i tested it . pls help

  48. wayoflife July 25th, 2010 1:27 am

    sounds like you might have a bad wiring harness. there was a recall on this a while back if i remember correctly.

  49. Scott August 8th, 2010 6:59 pm

    Hello. I just bought a 2001 Jeep and after 200 miles engine light is flashing. Diagnosed the following things: P0202, P0302, P1281. Is this reason for concern? What do I need to do? Do I need to bring it in for servicing already? Thanks!

  50. HIDavid August 18th, 2010 1:44 am

    Hello, our 2006 Wrangler Sport will turn over but not start. The Fault code reads P0522, which is the Oil Pressure Sensor reading low. Suspecting the sensor might be bad, I replaced it, but the engine will still not start. Same fault code reads out. Am I missing something or am I really looking at a failed oil pump or failed oil pump drive? Should something be reset to allow the engine to start?

  51. jeff August 29th, 2010 12:07 am

    I got some DTC’s that read P0000 and U3001, should I be concerned, thanks.

  52. Scott September 3rd, 2010 5:09 pm

    After backing up with my emergency break on my engine light came on and I got a P0202 code. Could this be a misfire because of the e-brake being on? Last week I changed all spark plugs and have ridden about 300 miles since with no probs. Thanks.

  53. Yann September 10th, 2010 12:18 pm

    While off-roading in the dunes today the computer gave me a warning message: Engine Oil Hot. Check the oil, everything seemed fine, engine was not overheating, etc… Got out of the dunes just in case, and on the highway everything fine. Not abel to find anything in the Owner Manual. What is it and what am I supposed to do? Service Center is closed for next 4 days.

  54. wayoflife September 11th, 2010 10:04 am

    it means you were over heating your transmission. when the light comes on, you need to stop your jeep but leave the engine running for a bit, this will help cool things off. to help prevent it from coming on in the first place, you should use lower gears.

  55. Craig September 12th, 2010 6:49 pm

    Code P1128 closed loop fuel system not achieved bank one anyone know the fix?

  56. Raymond Contreras September 25th, 2010 8:47 pm

    Thanks now all I need is help to fix it.

  57. Andre December 7th, 2010 11:13 pm

    I have a 2005 Jeep Grand Cherokee, and my airbag light is on. I pulled the codes for it and its U0151(Lost Communication with Occupant Restraint Controller ORC)What do I need to do to fix this? Where do I begain?

  58. Adam January 3rd, 2011 10:58 am

    jeep won’t engage 4×4 in eithe high or low. Trouble code given is the C1405 TRANSFER CASE RANGE POSITION SENSOR CIRCUIT HIGH. What the crap does that mean exactly and how do I fix it?

  59. Julie January 11th, 2011 9:34 am

    Anyone ever had the dealership tell them something is wrong and when you run the diagnostics on the vehicle, nothing pops up? Base auto hobby shop said it was the O2 sensors, the dealership says it’s a catalyst efficiency fault, and the vehicle shows nothing.

  60. Jorge February 13th, 2011 2:28 pm

    I just picked up the error code on my JK, thanks for the tip, very useful. The only error that it gave me was P-0455 Evap purge system large leak. Any comments on what could it mean or how to fix it? Thanks!

  61. Eddie Blazer March 6th, 2011 11:24 am

    P2181-Cooling System Performance
    2009 4 door X Unlimited 49,000 miles

    Coolant Overflow at minimum
    Temp Gauge working differently. (Bouncing,running warmer)

    Is that the cause, possibly?
    What might any other immediate causes create these conditions, at this mileage?
    Thank You in advance.

  62. grannygear March 6th, 2011 9:17 pm

    Is this the right place to post a question for troubleshooting??? I tried to use the method above to find some answers but no codes were given. That being said, I still have the same problem and have had so for about 2 wks now. My pass side rear turn sig doesn’t always work. I checked the bulb (was good) but replaced it anyhow, checked for loose wires and poor contact. All was good. A Mech. friend checked online and said that it looked like the computer wasn’t sending a sig to the light/plug. To me, if that were true, shouldn’t that throw a code??? Like I said, sometimes it works and sometimes it doesn’t. Any help would be great.

  63. grannygear March 6th, 2011 9:29 pm

    Guess I should have said that it’s a stock 08, 2dr, X modle. Sadly enough to say that the only off road it’s seen is my 1/2 mile dirt road for the past 3 yr that I live on.

  64. Mike March 8th, 2011 4:50 pm

    Still cannot get codes to show up. I placed key to on position, pushed it in, while keeping it pushed it switch to Off, then ON, then Off, then ON, then Off, then ON. Dash lights up, but I do not get the dashes —– All I get is the CEL flashing for a few seconds and GASCAP error…no related codes. Am I missing something?

  65. Mike March 9th, 2011 1:30 am

    I’ve been having C121E–BRAKE PRESSURE SENSOR COMPARATIVE PERFORMANCE. The ESP/BAS lights have been on for a week or so. What exactly do I need to check to get this fixed?

  66. wayne June 8th, 2012 8:59 pm

    abs light esp bas light andtraction control symbol light up and stay on.fault codes u1418 and c102b showed. what do these mean.

  67. k.aljabry July 26th, 2012 5:32 pm

    i have jeep wrangler 2008 and got a fault code p 0240 . what do this mean

  68. Anthony August 18th, 2012 5:51 pm

    I have a jeep wrangler sport 2003, codes p0301, p0302, p0305, po201, po203, po205. These codes done come up all at once though. A set like po201 and po301 will come up, ill clear the competer and after a few hundred miles another set of codes will come up for a differnt cylinder. Iv changed the spark plugs, the coil pack/plug rail. Iv checked all wires with ome meter. I am wonder if i should change the pcm out but im tired of throwing money away. What do you think?

  69. Anthony B September 11th, 2012 5:11 pm

    I have code C1210 according to my superchips programmer. I try clearing it and it always shows its ugly face again. the code says something along the lines of “G Sensor Input Performance”. My abs, traction and esp/bas light show up on the dash. I NEED HELP!

  70. Anthony B September 11th, 2012 6:01 pm

    Code C1210 “G Sensor Input Performance” shows up. ABS,Traction control, and ESP/BAS light are all on. Anyone have an idea?

  71. scott September 12th, 2012 9:14 am

    I received an error code of P0300 for my 2012 Jeep Wrangler Sahara Unlimited. Can anyone let me know what this means. Thanks.

  72. Randy October 30th, 2012 2:15 pm

    Does anyone know what P0562 means?

  73. Luke November 4th, 2012 4:13 pm

    On my 07 if you press the key in trying to look for codes turning from acc-run three times it wont read the codes but if you do it with out pressing in the key it will read and show if there’s a code

  74. issy November 27th, 2012 1:44 am

    does anyone know what P 2099 means? followed by ‘done’…

  75. RICHARD DYER January 21st, 2013 11:01 pm

    Where is the list you mention that’s at the bottom that shows the faults 00-99? I have a code PO113. What’s that all about? power train, SAE, FUEL & AIR METERING AND FAULT 13. PLEASE HELP.



  76. RICHARD DYER January 21st, 2013 11:27 pm

    Could you email me a DTC trouble code list?


    Richard Dyer

  77. Joe Putter February 24th, 2013 4:26 am

    Dear Sir
    I have the first 4 door rubicon wrangler released I live in south Africa so service centers are few and far between
    I have tried the tip with the key all that remains on is the engine warning light no codes no done . I have a uni chip fitted will this effect the process you describe ?
    Also the jeep can run for for like 800 km’s and then the warning light switches on slippery surface and drive by wire and performance drops and the gas usage becomes high when you are hundreds of miles from anyone it can become a problem.
    Most times if I leave it off for a while and start it up all the lights are off and it’s back to normal.
    I have 67000 km’s. Any suggestions.
    Thank you

  78. Melinda March 12th, 2013 2:36 pm

    I have a trouble code P 1060 and my engine light is on solid. Can anyone help. Just had new head gasket put on and my mechanic said it has something to do with the oxygen sensor. Any body want to confirm or deny that? HELP please. This car has been a nightmare.

  79. Cameron March 20th, 2013 8:08 pm

    i had a gas cap showing bad on my 2007 so i replaced it and reset code after about 50 miles light came back on again and now show a p0440 code what is that?

  80. augie valentin March 21st, 2013 12:29 pm

    my 2007 jeep wrangler jk will not start until i start shiffting back and foth

  81. wayoflife March 26th, 2013 8:01 am

    More than likely, you have a leak coming from your EVAP canister.

  82. wayoflife March 26th, 2013 8:01 am

    This is a common problem with the 2007-08 JK’s. I would contact your dealership as I’m pretty sure there is a TSB for this.

  83. Rick April 3rd, 2013 4:39 pm

    I have a 2001 Jeep wrangler, new moter installed about a year ago, engine light came on, fault code is P0138, can you tell me what it is? Do you email the answers? Thank you

  84. Jeepyfreak April 8th, 2013 9:03 pm

    I have 2007 wrangler unlimited and as of recent a week ago the speedometer will drop to 0 from any speed while it flash (brake-abs-esp-esp pic) but the engine will remain full power like it nothing going on and just a day ago engine light came on went to get code pulled it said p0573 while is brake switch 1 stuck off but when i follow ur step it show done with no code read is it common for speedometer to drop like that just over brake switch?

  85. Craig April 9th, 2013 3:31 pm

    My check engine light came on. 2008 JK Wrangler. I get the dashes and then the “done” message, but no error code. I took it into Chrysler and they got a P0303 code. Any reason why I did not get a code, but Chrysler did..?

  86. Virgil April 14th, 2013 10:10 am

    Got a reading of ” no bus “? Anyone knw what this means?

  87. Charlie April 16th, 2013 10:30 pm

    I have 2008 JK Rubicon and tried getting the codes through the above method…but nothing. Then found I only have to to do two cycles quickly instead of the three. But unfortunately got the -done- message with no error code. Then it finally clicked in that I had removed my battery that day and cleared the codes. Then after got it going I drove it around the blocks a couple times and got the codes P0513 & P2503.OMG! Any ideas?

  88. Heather May 10th, 2013 9:43 pm

    What needs to be done for P1486 On a 2001 Jeep wrangler?

  89. Bill Hartin May 11th, 2013 7:01 pm

    will I lose the codes if I take battery off

  90. clifford yuen July 29th, 2013 6:43 pm

    I have two codes. First reads P2181 cooling system performance. Since I did my mods I’ve been having cooling issues. Good on the highway or in town or on flat trails but as soon as I start going up hill on the trails I start to heat up. I just installed a BeCool electric fan and it’s not as bad but I’m still getting quite hot (75% of the gauge) going up long steepish hills. I also have an electric transmission push fan as well. Second code came up yesterday on the trail. I was at the top of a mountain range when my charge light came on, my temp gauge quit (went to zero) and the electric fan didn’t quit until I got home and shut down the vehicle. Code reads P0218 high temperature operation activated. Ever had this come up? Is it a concern? What do the Project JK rigs run for cooling? Any help here is appreciated as none of our local tech’s seem to have any idea.

  91. OJEEPO September 4th, 2013 10:46 am


  92. dan September 21st, 2013 6:29 pm

    Hey I have 3 codes I need to figure out what they are….P0001 P00A1 P0030

  93. Jim t October 17th, 2013 12:25 pm

    Tryed this and just got done message engine light still on. WHAT csn I try next?

  94. dave November 11th, 2013 11:30 pm

    i have a 2012 jeep wrangler unlimited and the check engine light came on, code PO302= cylinder 2 misfired. what doe shtis mean

  95. wayoflife November 21st, 2013 9:14 pm

    Means you should be able to get your heads replaced under warranty. A lot of us have had to do that.

  96. Harry December 21st, 2013 5:55 pm

    have a 2004 jeep wrangler rubicon 2 dr with a diagnostic code of P0122? read the I have no idea what the code means? Plz help, have 80,000 Plus on her, Third owner

  97. Harry December 22nd, 2013 12:43 pm

    PO122 code Throttle position sensor low is what I’ve determined by little more research. How is this Fixed?

  98. Greg March 13th, 2014 11:39 pm

    What are the codes P 0457 & P 0456?
    Thanks for the help.

  99. Ronnie March 25th, 2014 10:41 pm

    My son has a 2007 jeep wrangler unlimited. It always runs fine when 1st started. When turned off for a few minutes and restarted, it runs as if a spark plug has been pulled and running on a few cylinders. The code is for cylinder / injector mis-fire. Replaced the injector and still runs bad after being turned off for a few minutes. Help please. Any ideas what’s causing this? Ronnie….

  100. FEDERICO P April 14th, 2014 2:05 pm


  101. sandeep April 21st, 2014 10:28 pm

    Hey I just changed my all four tyres on 2010 jeep wrangler unlimited and it’s show low tire on computer not sure what s that mean

  102. Rick May 13th, 2014 8:47 pm

    Tried the directions way its not working for my 2010 wrangler islander so i will try from acc to on like someone suggested and see.

  103. Terri July 22nd, 2014 9:44 am

    It didn’t work the first time. Then I figured it out and did it twice and it said “done”. Light is still on. Not running funny. Going to take it to a mechanic.

  104. Aniceto Pontillas September 6th, 2014 3:22 am

    Ran the test and got dashes but no codes than “done”. Still get the engine lights on. Any ideas??
    I have a 2009 Jeep JK Wrangler X .

  105. Toni September 26th, 2014 8:14 am

    2014 JK. Keeps going into limp mode. Code displays 10 ECM light flashes. Then “done”?

  106. Robert October 22nd, 2014 10:28 am

    I have a 07 Wrangler jk code is P0882 says its low voltage. What needs to be repaired?

  107. Anthony B December 10th, 2014 6:59 pm

    I got code 0128. But what now and how do I know how concerned I should be

  108. Mark February 24th, 2015 7:00 am

    fault code p0087 on Jk CRD what is this and how do I fix?

  109. Kreg waits March 13th, 2015 2:54 pm

    I have a 2004 rubicon will crank over but won’t start . It shows no codes I have replaced the crank position sensor , checked wiring , replaced computer and fuel pump still no start it try’s to fire sometimes but won’t im stumped

  110. Steve April 2nd, 2015 12:17 am

    2007 JK 2.8 have a P3395 error code
    just had the injector changed any idea what the fault is

  111. Anthony B June 19th, 2015 9:07 pm

    2008 JK 3.8 Auto. Throwing codes U1418 “umplausible right wheel distance signal received” and C1035 “right rear wheel speed comparative performance”

    Is it just the right rear wheel sensor or is it more then that?

  112. Chris July 8th, 2015 2:20 am

    My check eng light is on but does not give me a DTC code. Now what do I do?

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