Many of our customers have a huge problem with reading out Jeep Grand Cherokee 2.7 CRD fault codes. It is possible to see engine fault codes with key on-off method, but you can not clear faults without correct OBD diagnostic tool. Also disconnecting battery will not clear fault codes on 2.7 CRD Jeep Grand Cherokee. Sometimes car will clear faults itself after replacing faulty part and driving couple of kilometers twice, but not always. Until today they were correctly read out and cleared only with DRB III and Bosch KTS diagnostic devices. Those devices are pretty expensive and not reasonable to buy for private use. So we decided to make a free diagnostics software that is compatible with 2002-2005 Jeep Grand Cherokee 2.7 CRD and that would work with a cheaper device. So we made our own diagnostic software and designed it to read/clear Jeep WJ CRD engine and transmission faults. Our Jeep diagnostic software is very basic and is not comparable with professional diagnostic equipment. Our goal is to help the car owner to quickly view and erase fault codes without the need to run to workshop and pay money for it. It is mainly for people who sometimes like to fix their car in their home garage. Our Jeep diagnostic software will never be sold for money, It is free forever – to everyone.

For hardware we chose ELM327 diagnostic scanner as it supports all OBD protocols and is compatible with 99% of modern cars. ELM327 is also pretty cheap, genuine ELM327 that uses genuine ELM chip issued by ELM Electronics costs about 50 EUR, Chinese USB clone (non genuine) costs about 10 euros in ebay and every car owner can afford it.

Current version is Windows based and works with ELM327 adapter. This new software can read engine and transmission fault codes and also cleared them.  Other modules – ABS, Body, Instrument etc., are not supported. There is no explanation of the codes in the diagnostic program, it just shows what fault codes are stored in your car’s engine/gearbox. You can check explanations at or just google them, there are a lot of tutorials on the web. Be mentioned that diesel and gasoline Jeep fault codes are different, so if you look from the web, then only look 2.7 CRD codes. Since this is Mercedes engine, many codes are same that in MB. Be mentioned that diesel and gasoline Jeeps codes do not match – if you have 2.7 CRD, then do not look fault code explanations for gasoline models.

Our Jeep fault code scanner is Windows based and should work on Windows XP and greater. We tested it on 32-bit XP, 64-bit windows 7, Windows 8 with ELM327 USB versions and Windows 8.1 Tablet with genuine ELM327 BT version and it works perfectly. This software connects with ELM straight to COM port and if you use BT version, then you should pair ELM327 and connect it with your computer before using our program. Also be sure that you have BT drivers correctly installed on your computer.

You need to have Microsoft .NET Framework 3.5 or greater installed on your computer. Most computers already have it.

Android version working with Android 4.3 and up.

There are problems with Chinese BlueTooth ELM327 clones. It is true that the ELM is only as good as it’s user. Genuine ELM is well made and can communicate through all OBD II protocols and is only limited by its user’s wisdom to use all ELM options. Different case is with Chinese clones – there are nice labels on those devices “Supports all OBD II protocols”, but real life is different. Newer Chinese devices are different from what they used to be. They used to copy ELM chips, but now they made a new device with their own firmware for chips inside the device, added some major protocols and called it ELM327. Those devices do not support necessary commands for ELM configuration and some of them even does not support necessary protocols. Chinese devices are working with some diagnostic software like Scanmaster ELM or Torque PRO on many car models, but 2.7 CRD Jeep ECU and TCM data transfer is much more complex and newer clones are not supporting them. This is the reason why our diagnostic software does not work with many Chinese ELM327 devices. Older Chinese USB clones seem to be working well with our software, problem is with Chinese BT and newer USB devices. We cannot do anything about this. With problematic ELM327 device you will get answers: Fake ELM.

China is a country of surprises and you’ll never know what you get – working device or garbage. At the bottom of this page you can find some feedback and we are pretty sure that those who can not get our diagnostic software to work, are using fake ELM device. Avoid Chinese ELM327 clones, they are not working correctly! ELM327 BT and USB with original chip are working fine. If you want to be sure, buy a device with genuine ELM327 chip.

Configuration commands that ELM must support are:
You can ask about those commands from seller before buying Chinese ELM device. Chinese Vgate iCar2 iV350 BT and Vgate iCar3 BT devices were working in our tests, but we got feedback from customers that not all Vgate devices work. We asked about supported commands from Vgate, but they have really good skills of ignoring everyone who is asking something more specific. We will keep trying.

There are only a few places in EU where you can buy genuine ELM327 device. We found one from Romania and we bought one BT ELM327 device for testing. Now we can confirm that this device supports all necessary ELM commands and works fine with our software. Here is an image of this ELM327.
It costs 49 EUR and for genuine chip this is pretty good price. You can check it from

Same seller is also selling in ebay and his seller name is car.pulse

Download JeepDiag - Free Jeep Grand Cherokee 2.7 CRD diagnostic software for Android


Works with Android 4.3 and up.

Download JeepDiag - Free Jeep Grand Cherokee 2.7 CRD diagnostic software for Windows




Here are some images of Windows based JeepDiag:

After opening a program just choose COM port where ELM327 is connected and you are ready to go. Turn the ignition to ON position. Reading Jeep fault codes will take a few seconds. There is no explanation for fault codes, you can only see numbers. You can find explanation of fault codes from our site or look at correct explanation from google. There is a lot of forums where you can easily find help if you know correct codes.
If you have trouble with connecting COM port or you see some unknown letter after COM port name (COM3n, COM4象 etc.) then check if the bluetooth drivers are installed correctly on your computer.
Clearing Jeep transmission fault codes with our software is very easy. It takes about 5-30 seconds, depends on how much faults your car has and if you are using genuine or fake ELM. If some codes are not cleared, then you will see it. This means that your car still has something broken and you need to fix it.

Here you can see how engine fault codes are displayed - only codes and no explanations.

Clearing Jeep engine fault codes. After clearing the codes, you will see which codes were cleared and which not.


And below are some images of Android based JeepDiag:

Free Android version of Jeep Grand Cherokee WJ 2.7 diesel diagnostic app - JeepDiag is ready now. Android connection with ELM327 device is simple. After you click on "Connect ELM327" all BT devices paired with your phone or tablet will appear. Just choose the correct ELM327 device and you are ready to go.
After connecting ELM327 you will see menu lines. Read Engine and Read Gearbox will read fault codes without deleting. Clear engine and Clear Gearbox will display fault codes and clear them automatically.
Reading and clearing transmission fault codes with your android phone is easy with JeepDiag. As we made this app as simple as possible, then there are no explanation of codes inside JeepDiag. To look what fault codes exactly mean, look at site
Your Jeep fault codes will be cleared and you will see if any of the codes are not deleted - if some fault code stays, then problem is not fixed and you need to replace/fix broken part.

Here you can comment our software. This form is only for commenting on how our program works, if it is fine or did some problem occur. We appreciate any feedback, even if our program will not work as expected. In comment please specify what kind of ELM327 are you using, so everyone will know which version works and which not. All links of working devices are welcome as well. All feedback will be displayed bottom of this page, so everyone can see them.

For any questions, please use form on “contact” page.

* indicates required field


19. enero 2018 15:48
hola no me reconoce el cable elm 327 el ordenador

18. January 2018 08:09
Such an awesome app!
The pro version has now expired.
How can I purchase it?

10. January 2018 09:40
Kevin, you need to install USB ELM327 drivers first to your computer. Probably you got cd disk with your ELM327 device.
Fabrizio, WiFi ELM327 will work only with Windows computer if you are using some Com port redirecting software.

9. January 2018 11:42
hi there i keep getting message on this com port no correct elm connected can you help have tried lots of things but no joy cheers kev

6. gennaio 2018 14:25
hello, i'm tyyng with en elm327 wifi and androd software, but not work, i have a problem , 3 on off not find anything, but the engine lamp is on and when i put on D or R the car make a jump...

many thanks

5. January 2018 15:02
Hello Eduardo.
You can use only Bluetooth ELM327.

Andrew, OBD socket have +12 volts without ignition and you can hold ELM327-phone connection, but all car modules are switched off and you can not make any diagnosis.

4. enero 2018 12:02
Puedo utilizar un elm327 wifi en vez de bluetooth ?
( para telefono android )

1. January 2018 19:45
Andrew Byrne
Using the pro software. Very good. I wish you had time to do further development. Works with a cheap 1.5 clone and the recommended one.
Can the connection be kept alive with the ignition off?

26. December 2017 15:04
Bruno Branson
Works with a Proscan adaptor. with windows and both android softwares. Brilliant, thank you.

24. novembre 2017 18:38
Existe t il un logiciel en Français si possible pour ELM 327 Wifi V1.5 pour Jeep Grand Cherokee WG Overland 2004 2,7CRD fonctionnant sousPC Windows XP ET/OU Iphone IOS ?

24. novembre 2017 15:55
Bonjour. Est-ce qu’il existe une version de logiciel pour iPhone ?

23. November 2017 21:03
Hi!!! Congrats for your work!!! It is awesome!! I'm trying your new software. It is incredible! Could you tell me when updates are released so i can download it immediately? Thanks!!! And good job!! Matteo

23. November 2017 09:34
Hello Jan Bo.
I do not have software for 96 model, sorry about that.

23. November 2017 08:04
Jan Bo
Hi, habt ihr auch eine Software für den 5.2 Limited ab 96`?
Ich hab des öfteren Getriebefehler zu löschen, mit meinem Gerät kann ich aber nur die MKL löschen.
LG, Jan

14. November 2017 18:37
Yoram Levi
I install the JeepDiag APP on my mobile (Galaxy s8)
Till Last week the APP work perfect
Start today, the APP close automatic and stop
I can not run the APP
I enable the download and the install the APP on my mobile

Help please


8. noviembre 2017 19:28
Juan José Rissotto
Hola tengo problema con placa electronica(P0702)

17. octubre 2017 15:15
hola estoy intentendo diagnosticar y me dice que no reconoce el elm327

15. octobre 2017 15:58
j'ai acheté un ELM 327 usb chez mister express sur ebay.
Leur logiciel ne fait rien car le véhicule est trop ancien pour lui (GC 2,7 de 2002).
Mais avec votre logiciel re-initialisation les doigts dans le nez en 1 minute !

10. October 2017 12:39
Hi There

I have an ELMScan 5 with an ELM 327 Hardware Revision: 3.2 and Firmware Revision: 1.2a.

It's original with RS232 output, but I have a cable from RS232 to USB to my pc.

It communicates nicely, but comes with a mistake. FAKE ELM327 is that the Firmware that's too old?

Will there be a software ver. for iPhone or iPad sometime?


26. septembre 2017 20:55
dom langlois
bravo pour ces explication ,

mon véhicule , grand cherokee WJ 4l , 6 cylindre
vous me conseillez
le elm BT sous android , ou usb sur pc
merci ,

17. September 2017 00:17
For anyone experiencing the same problem as me:

For some reason this app was not able to communicate with my transmission. These guys are working on a new app which I was able to test. The new app communicates just fine with the TCM, and now my Jeep is on the road again.

Don't be afraid to send them an email, and make shoure to give a donation. They're saving you a lot of money;)

14. September 2017 21:29
Just received the BT ELM327 v2.2 from Romania today( I want to access the gearbox, as i have the P0702 error code on my 2002 Jeep GC 2.7 CRD.

I tried your software on Android and 2 different Windows 10 PCs, but none of them were able to read or clear the gearbox. It was able to read and clear the ECU on all devices though.

Any ideas on how to solve this?

8. septembre 2017 16:36
fournier cyrill
you can remove my comment .
upload drivers into the device manager and all is ok

8. septembre 2017 13:59
fournier cyrill
I buy a real elm-327 and I have as info
: on this com port no correct elm connected!
thank you for giving me solutions.

8. septembre 2017 13:16
fournier cyrill
I am very dissatisfied!
I ordered and received usb elm 327 from Romania.
to connect to your software is impossible!
your software only offers one COM 3 port, and I can not connect to the PC.
I have yet to download drivers usb on
the software tells me that I am not connected to com 3.
how to do.????
it is a situation that costs me dear and that does not solve anything and that lasts in time !!!
I tried with two pc (windows 7)
and it's the same problem !!
thank you for following up on my message.

7. septembre 2017 16:14
Fonctionne parfaitement en bluetooth sous Android, mais comme déjà précisé, uniquement avec un VRAI ELM327.
J'ai essayé avec une copie chinoise à 10 euros, et ça ne fonctionne pas.
MERCI! C'est génial de pouvoir effacer les codes défaut moteur + boite avec un simple téléphone : qui peut en dire autant?

28. August 2017 20:40
Have elm 327 but wireless not you have a program for wireless elm 327

23. August 2017 00:14
I clear my faults in the engine and gearbox and I get the jeep out of Sleep mode but when I switch off the engine it comes back won get out of 2nd gear. Reverse also good. Help please.

21. August 2017 15:24
Have elm 327 but wireless not you have a program for wireless elm 327

20. août 2017 14:51
je viens d acquerir un elm 327 et mon jeep grand cherokee 2.7 crd de 2002
renvoie un code errors fak est t il possible que ma prise diag ne fonctionne pas merci de votre reponse

2. Agosto 2017 14:31
I would like to try live data application.

13. juillet 2017 00:39
Gobert loic

I've seen on comments you have worked on a live data reading application. Can you send it to me?


4. July 2017 07:14
Здравствуйте! Как можно скачать JEEPDiag для windows?

16. juin 2017 07:54
karamitros yann
Merci pour votre appli, elle est au top.
J'ai des soucis de démarrages aléatoires.
Vous n'avez pas de solutions pour pouvoir lire les valeurs en temsps réel sur PC?

Merci beaucoup.

29. May 2017 14:25
Hi Dj GnB. 2.7 engine and transmission fault codes, live data and Input/Output is ready and we are working every day to add more modules. Send me request to email if you would like to try it.

29. May 2017 13:53
Dj GnB
Hello Kaido! How is your progress with dealer level app? WJ 2002-2004 models?

22. mai 2017 10:40
nicolas S
I use the software with windows 10 pro
Perfect conection with ELM from Romania (use usb version, just need install the correct drivers)
Easy to know errors and clear them

13. May 2017 18:41
Habib, Chrysler made their own data bus protocol that is used only in older Chrysler Group cars, including Grand Cherokee WJ 1999-2001. Unfortunately ELM327 does not support this protocol and we can not add older Jeep models.

13. mai 2017 00:44
Habib Kraiem
Est-ce qu'il y a un module de diagnostic pour G Cherokee WJ modèles 1999-2001? Si oui pourriez-vous m'aiguiller la dessus.
Merci d'avance.
Habib Kraiem

5. May 2017 21:26
Martin Walker
Oh and if you download and use this diagnostic software, remember how frustrating it's been not being able to diagnose or clear the codes on your Grand Cherokee 2.7 CRD! Send these guys some money in appreciation for all the time they've spent on this (even if it's not a lot), they deserve it!

5. May 2017 21:17
Martin Walker
Works great with the car.pulse cable -

Tried a cheap Chinese cable but a waste of time, I recommend you buy one from these Romanian guys!

Thanks for developing this diagnostic software, a beer (or two) is on it's way!


28. April 2017 22:30
Alex R

Leider bekomme ich immer die Meldung: On this Com Port no correct ELM connected!
Treiber i.O., ELM327-Clon, funktioniert bei anderen Marken mit ForScan, Carsoft demo, etc.....

Was kann ich tun, damit JeepDiag mein Elm erkennt?

Grüße Alex R

14. April 2017 16:53
Graziano, It is possible, because engine data transfer uses "Fast Initiation" (ELM command AT FI) and gearbox data transfer is working without this command. So your ELM327 does not support AT FI command.

14. aprile 2017 13:45
I bought an ELM327 USB. Is it possible that "read engine" function gives "fake elm" response while the "read gearbox" one works perfectly?

25. March 2017 23:45
Yes, Windows version is working with USB ELM327 as well.

25. marzo 2017 23:30
Hi! this software can work also with a USB ELM327 version? Thanks

17. mars 2017 21:17
Bonjour, suivant vos conseils j'ai acheter l'ELM 327 que vous conseillez sur votre site et j'aurais deux réflexions à faire en effet, lorsque on commande sur le site roumain il y a 19€ de frais de port pour un tout petit objet qui coûte environ 48€ et l'objet n'arrive qu'après 4 jours de transport, ce qui semble très long pour ce prix de transport et surtout quand on est en panne, ensuite l'appareil fonctionne avec vos logiciels, mais malheureusement il est intégralement en Anglais et aucun moyen de changer de langue, ce qui est compliquer quand on parle mal cette langue, pouvez vous changer cela, afin que l'on puisse choisir sa langue pour mieux comprendre le fonctionnement de l'appareil ?
Sinon il fonctionne, reste à voir si après réparation de ma panne il parviendra à rétablir le bon fonctionnement de ma voiture en effaçant les codes défauts.

15. March 2017 18:03
Jeepdiag working only with 2.7 CRD Jeeps. 4.0 gasoline model is not supported.

15. März 2017 13:22
kann ich diese Software auch für meinen Jeep Grand Cherokee BJ. 2000, 4l,nutzen?
Ich will Motor- und Getriebe-Codes auslese und löschen können.

9. March 2017 20:22
My 2002 2.7 Jeep started to go into temporary limp mode almost every second day. It had done that for the last year or two but until now, it would only happen like once a month so I wasn't really concerned. The check engine light would come on and the power would be limited. Restarting the car would instantly fix the problem until the next time. Doing the key trick I found out that I had quite a lot of codes with P0700 and P0702 being some of them. I managed to fix the limp mode problem just by cleaning the whole PCB board and the gear selector base that houses the magnets with cotton pads soaked in contact cleaner. I also sprayed contact cleaner on all of the connectors that where under the central console and had to be disconnected from the PCB board to remove it. Just in case cleaned the TCM connectors as well. I think that the magnets were too dirty for the PCB sensors to detect the correct position of the gear selected but I might be wrong. Been happily driving my Jeep for a month now without check engine light turning on or the car going to limp mode. Thank you Kaido for such a awesome website.

5. March 2017 14:07
By default Android lets only install apps that are downloaded from Google Play store. Check your phone settings, if installations from unknown sources is allowed.

5. März 2017 12:49
Hallo, habe gerade die android version auf das telefon geladen. Leider gibt es einem fehler bei der Kontrolle der datei und die installation wird abgebrochen. Was habe ich falsch gemacht? android 4.4 und 5.1 das gleiche problem

21. février 2017 19:31

j'ai le code d'erreur atwm8120f33e not supported by ELM
Communication error? Fake ELM!

j'ai un ELM327 generique "tout protocoles" dois je acheter un autre ELM ?

si oui pouvez vous me donner un modèle chinois pas trop chère que vous avez testé


20. February 2017 15:29
Itth this program will the error P0702 give more detail to say exactly where the problem is?

15. Februar 2017 19:38
Die Software funktioniert perfekt mit dem AutoDia E327 von Die Platine von gewechselt, die Fehler ohne Probleme mit der Win-Version aus der Getriebebox und dem Steuergerät gelöscht und der Jeep schaltet wieder wie am ersten Tag

Danke an das Team !!!!

15. Februar 2017 14:26
waller walter
For Helping give no code elm have no code.
Thanks sale the car is better

15. February 2017 10:32
P1685 is SKIM SYSTEM INVALID SECRET KEY IN EEPROM. If you can start your car, then do not worry about this and focus on P0700 and P0702.
If P0700 or P0702 is active and comes back after clearing, then there must be some other code stored in transmission that is causing P0700 and P0702.
P0700 and P0702 are "Transmission generic electrical" faults and they are stored in ECM (Engine Control Module). They appear only if transmission has an active fault code. If transmission has some electrical problem, then fault will be stored in TCM (Transmission control Module) and also TCM will report about this to the ECM. By this report ECM will store P0700 or/and P0702.
For this reason P0700 and P0702 can not be alone.

13. Februar 2017 15:12
Walter waller
Guten Tag,
wir haben ein Problem grand Cherokee 2,7 crd es war zuerst p702 p700
Notlauf die Fehler wurden gelöscht.
Wieder notlauf unter dem fahren geht gang raus und schaltet nicht mehr.
Werkstatt macht Kontrolle magnete usw Fehler gelöscht geht nicht mehr.
Dann kamm Fehler p 1685 habe ich mit dem elm327 gelöscht gearbox keine Fehler engine keine Fehler aber er schaltet nicht !
Vielleicht haben sie einen Tipp.
Gruss waller

8. febrero 2017 12:15
when i enter in diagnosi in engine put the tipical failure p0702
when i enter in transmisión put sometimes the p0702 but also the
p2310.. what means it?

6. febbraio 2017 12:12
Funziona anche per Jeep Cherokee 2.5 CRD !?

4. Februar 2017 15:57
waller walter
Guten Tag.
Leider habe ich per post ein elm327 bekommen kann nur wifi kein BT ihre Software Android kann nur BT oder gibt es eine BT Lösung.
Hatte Getriebe Probleme 2.7 crd 2003. code 700 702 wurden gelöscht und jetzt Geht gar nichts mehr Getriebe schaltet nicht schluesselmode 1685 Fehler Datenbus aber genauer kann ich es nicht sagen
MFG waller

2. February 2017 16:52
belloc christophe
Ma bva de mon wj est bloquée en 1 ère puis je la débloquée avec votre logiciel ou dois je faire réinitialiser le TCM ?

26. janvier 2017 11:16
Bonjour, tres bien votre logitiel, simple et fonctionnel.
J'ai pu lire les codes sur un wg de 2004 et 2003 sans probleme.
Par contre sur une suite de code comme :
Seul P1511 ne s'est pas effacé. Normel ou paqsje ne sais pas, mais je tenais a vous le signaler.
Si seulement vous aviez crée se logitiel en 2011, cela m'aurait evité bien des deboirs.
Je vous remercie et vous souhaite bonne continuation.
Cordialement, Chris.

25. January 2017 21:32
For WIFI device you can use some Virtual Serial Port driver like HW VSP with your WIFI device. It will redirect TCP/IP traffic to COM port.

25. January 2017 18:31
Dan potts
Hi. How can I get the software to work with a wifi elm327?



24. January 2017 21:30
Software works only with 2.7 CRD Jeep.
Jeeps with other engines have different data bus protocol and they are not supported.

23. Januar 2017 16:18
Matthias Jaksch
Funktioniert sie Software auch für einen 99er 4.7 4x4?

Danke und Grüße
Matthias Jaksch

22. January 2017 22:51
Hello Beranger.
Seems like you did not pair ELM327 device with your phone. Every Bluetooth device should be paired before you can use it.

20. janvier 2017 17:54

je viens d'acheter une prise ELM327 VER1.5A PRO sur ebay. Je viens d'installer votre petit soft. Mais lorsque que je veux lire les PCodes il m'affiche "On this Com Port no correct ELM connected!"

Pourriez vous m'aider?

Beranger PUDIL

16. janvier 2017 19:14

J'aimerais un logiciel qui diagnostique la transmission, donc votre logiciel me plairait, mais sur un Jeep grand cherokee wh ou wk de 2005, crd 3.0L 218 cv, marcherait il ?

Merci d'avance

8. enero 2017 21:04
Mario Stin
Hola, quería solicitarles si me podrían informar si hay algún software ,que se pueda utilizar en una Grand Cherokee /2008/2009 V8 4.7 WK, para corregir cuando se desconecta el sierre automático de las puertas , causado cuando se desconecta la batería, cordial saludos Mario( Argentina)

28. December 2016 15:46
Jean-Luc Courbon
Problème boîte de vitesse bloquée en seconde suite batterie trop faible résolu après effacement des codes boîte P2602 (solenoïd voltage low), P2222 (Transmission oil temperature sensor erratic) et du code P0700 (Check Transmission DTC's).
Diagnostic configuration : ELM 327 chinois V1.5 à 10 euros connecté sur USB W7/PC USB. Grand merci à

Gearbox default fixed (second speed only after use of faulty battery) : P2602, P222 and P0700 cleared.
Configuration Tool : chinese 2016 ELM327 V1.5 - USB interface connected on W7/PC.
Many thanks to

20. décembre 2016 07:43
Achat elm327 avec puce originale, Bluetooth, fonctionne très bien avec mon wiko (attention à la version Android 4.3 minimum) . Plus de 6 codes défaut effacé en deux clics sur GC 2.7 2002. (moteur, capteurs de roues avant, boite de transfert, boite de vitesse). Super logiciel, tout fonctionne, je suis ravi. Merci...

7. December 2016 23:30
john mcleod
The elm327 and your software worked fine on my samsung note tablet and even flaged up the fault with abs, rear sensor, once sensor and new shifter board were fitted and fault codes cleared all was fine, very happy with the software etc.??
happy customer in the FALKLAND ISLANDS

2. December 2016 21:08
ELM327 from will work on every 2.7 CRD Jeep Grand Cherokee. I have used it on 2002, 2003 and 2004 year models.

30. novembre 2016 18:17

Mon grand cherokee 2.7 crd est de 07/2002, sur le site que vous conseillez pour achater le ELM 327, ils disent que sur les moteur diesel l'appareil lit les défault à partir de 2004, à ma connaissance le grand cherokee 2.7 crd de 2002 est le même que celui de 2004, pouvez vous me confirmer que le ELM327 de l'adresse : fonctionnera avec mon cherokee

23. novembre 2016 19:28
fabio schiavinato
funziona con windows 10

14. November 2016 15:42
Korber Heinrich
hi habe den ELm 327 aus Romänien bei ebay gekauft.
wenn ich die Fehler auslesen will schreibt das Programm kein Port vorhanden

13. November 2016 11:40
First, thanks for the android version, it works just fine. I was able to use it with my generic obd2 BT adapter to reset the gear on my wj wg crd 2.7 2004.

I would like to ask you guys to enable ratio setup - we the jeep owners would like to increase the tier diam and compensate with bigger gear ratio.
Increasing the gear ratio require updates to the gear computer otherwise it got into limp due to "mismatching" speed report from the abs sensors.
Your help is appreciated.

3. October 2016 13:50
Hello, thank you for good work! I Live in Latvia (EU) and wee have Jeep WJ more and more popular, but by now that are 16 to 12 years old, and have various issues, So your software are wary helpful! Thank you, waiting for dealer level-like app. Will donate.

1. October 2016 22:40
Bernnardo Márquez
In a lecture of jeep yj 94:

reading engine faults:

ATWM8115F13E not supported by ELM comumunication Error

28. September 2016 14:05
Works great with this ELM327:

13. September 2016 22:46
WIFI is not supported, but you can use some Virtual Serial Port driver like HW VSP with your WIFI device. It will redirect TCP/IP traffic to COM port. It is tested and will work fine with Jeepdiag.

13. September 2016 11:34
Tamas Hetesi
Have you the jeep diagnostic software in Wi-Fi version? Accidently I bought the Wi-Fi version from the website what you mentioned, from Romania.

10. September 2016 13:15
Where is the best place to buy an ELM327. I am in South Africa.

31. August 2016 13:04
"communication error : fake elm" (I think it's a chinese version). My ELM is an usb V1.5a.

25. August 2016 21:32
Henning Le Roux
Cleared all codes with none remaining.
Tomorrow I take her for a drive and see.

9. August 2016 13:15
Samuel, at the moment Chrysler DRB 3 is the only device that can do everything you need.
At the moment we are developing an app that is almost dealer level for WJ - supported will be all modules of those cars: keys, immo, ABS, body, doors, entertainment etc. Also live data and tests. It is huge work, it takes time and we are on time if we can release it by the end of this year.

9. August 2016 09:44
Rev Samuel MSE Kayuni
My name is Samuel from Malawi Africa. I own a small business of renting and selling used 4x4s from UK market.
Latterly have sold many Jeeps with Diesel engines
CRDs. Right now I have 10 Jeeps parked at my yards have various issues like Keys not recognized,immobolizers, gears limp modes etc
I bought various diagnostic scan machines like launch, dvatage and the last one called DG VSI2554 I need soft ware that I can install in the machine that can handle issues of my Jeeps. Any idea please help.
I look so stupid to the people have supplied Jeeps of various models. I love these vehicles when running properly.

2. August 2016 14:20
Andreas Sterzenbach
vielen Dank für die Bluetooth Version!
Dieser Bluetooth-Adapter hier zum Preis von €19 funktioniert sehr gut, auf Android und Windows 7 getestet:

many thanks for the bluetooth version!
this bluetooth Adaper functions very well, I tested it on android and Windows7.

22. July 2016 07:36
neil solomons
Hi thanks
I've encountered an issue with aux position on the Ignition where the radio is suppose to go on when the vehicle is of, immediately after clearing codes with your software. Got the same elm 327as in your pic connecting to usb. have you anny solution or help.

5. May 2016 21:32
We got USB version from car.pulse and yes, it has genuine ELM chip (ver 2.1) inside and it is working correctly. As it is using genuine ELM chip made by ELM Electronics, then all ELM commands are supported.
Those Romanians are making good stuff for reasonable price and their devices are worth every penny.

23. avril 2016 15:14
Are you sure elm327 USB (not BT) from car.pulse on ebay works ? because I've just buy one on ebay (from an other seller Diagscan) and it does'nt work, message : "communication error : fake elm" (I think it's a chinese version). My ELM is an usb V1.5a.

14. avril 2016 23:07
Hi guys.
I received the real ELM327 Bluetooth from Romania today.
Your jeepswj software reported it as ELM version 2.1.

I connected the Bluetooth ELM to a virtualized XP Pro SP3 running under Parallels Desktop 9 on my Apple laptop (OS 10.7.5).
A little tricky to pair it but I get it working.
I successfully erased a remaining default engine code on my 2.7CRD.

I also paired the ELM with my smartphone (Galaxy S2) without any trouble.
But I don't have appropriate app to communicate with the jeep TCU, I can just read engine codes (french OBDfacile app).

Would you send me the (beta) Androïd app so I can try it ?

Thanks for all your work !!!

7. avril 2016 14:36
Edit from last post : still has BT units, it was a server error. I ordered one and I hope I can check the Android pre-relase software soon.

7. avril 2016 12:30
Hi Kaido.
Just to let people know that BT original ELM327 is out of stock from website above. I emailed the seller. Without BT unit I can't test the Android pre-release ...

6. April 2016 09:23
Thankyou, your advice got the job done, I am now enjoying driving at more than 30mph

3. April 2016 00:55
Just for the feedback, my elm 16bit branded ROH I'd with a previous software doesn't works. I will try an other later.

Nice site, a lot of infos about WJ et some produts interesting.

GB from France.

2. April 2016 13:43
Will you make a version for Android that can be used with WIFI conection any time soon?

31. März 2016 11:34
Konstantin Tscherepanow
Guten Tag,

funktioniert das auch mit einem Jeep Grand Cherokee BJ 2004, WG, V8-4.7L

Danke und Grüße
Konstantin Tscherepanow

29. March 2016 21:16
WOOHOO, we got our first donation today from a happy user for our diagnostic app:)
It happened after 10 months and 3000 downloads. Thank you Fernand.

18. March 2016 13:42
We got first Android release to read/clear codes and it is in test stage now to figure out if everything is correct with connection and data transfer. It is not ready to publish, but I can give app link to those who would like to test it. All testers are welcome, just write us through contact form.

18. March 2016 13:16
Is it long time to the android app is finish? I have problems with using the pc.

25. February 2016 18:51
We did not have any WIFI ELM when we made our software and it will not work. Probably we will not upgrade it cause at the moment our goal is to make an Android version.

15. février 2016 14:30
Hi guys !!
Does your software works with WiFi ELM module ?
I got one from a friend before receiving the cabled unit from China (MartyVayne's link, thanks to him if it works for me !!).
It may be tricky to connect the ELM from your software (I don't know which port WiFi could use).

11. febbraio 2016 09:35
Ragazzi siete grandi grazie
Il vostro programma funziona alla grande con Windows xp è Elm 327 usb Made in Cina
Appena collegato porta com 3 legge e resetta tutti gli errori del motore e del cambio del mio GC WJ 2.7 crd del 2002.
Sarebbe bello riuscire a controllare anche eventuali problemi del climatizzatore o altro
Sono ansioso di provare anche la versione Android
Complimenti e Buon lavoro.

8. February 2016 18:01
Elmscan 5 Update.
Reads the gearbox codes but not the engine codes.

7. February 2016 17:49
Yes, this message means that your ELM327 does not support necessary commands that are required for Jeep diagnose. It is a common problem for many Chinese devices. With genuine ELM327 chip all commands are supported and it will do the job. Better is to get ELM327 with genuine chip, but you can try next Chinese device until you get working one, many Chinese devices are also working fine.

For example Vgate iCar2 BT device worked well, but until manufacturer has not confirmed supported command list, we can not be sure that all Vgate devices work. Vgate is not very cooperative to answer to us, but we will keep on asking them.

7. February 2016 17:14
Janis Bielis
I bought a Chinese ELM327 cable connecting to your program, I appeared massage FAKE ELM.
Does this mean that I have to buy original cable?
Thank you .

7. February 2016 17:08
At the moment only Windows version is available. We are working with Android and will add it to site ASAP.

7. February 2016 14:52
j evans

cannot access the download via android or ipad..Is it still available?

6. February 2016 18:04
Anyone used this with an Elmscan 5 compact?

5. febbraio 2016 12:38
can't wait for android version to be released!

3. Februar 2016 16:38
Thorsten Weidmann
Tank you, my Jeep-Gearbox works again ! The software has worked perfectly with an ELM bougt for 15 € by ebay. It looks like this, you showed on your side.

2. February 2016 23:25
Hi this is great, does anyone have any UK links to working fake elm devices?
Took a gamble on the Chinese fake but didn't work.

2. February 2016 11:15
We are working with Android at the moment and hope to finish it within some days. Just little more patience.

2. February 2016 11:05
Thank you! It works perfect, even with a Chinese fake and Windows 10. When will the Android version be available?

1. Februar 2016 20:33
Hi Kaido,

when do you think the Andoid-Version is ready to use. We are already waiting impatiently for the app :-)


1. February 2016 18:49
It means that your ELM is Chinese fake and does not support basic ELM commands. Using Chinese ELM327 is like lottery - you never know if it works or not. Try to get other one, preferably with genuine ELM chip.

1. février 2016 14:36
hello with my usb elm 327 i have the message "fake elm"
i use window vista.

27. December 2015 19:08
It means that your computer can not connect with ELM. Be sure ELM Com drivers are installed and choose correct com port where ELM is connected.

27. diciembre 2015 17:42
Antonio Moreno
On this Com Port no correct ELM connected!

22. décembre 2015 19:16

j'ai testé sur ma voiture et ça ne fonctionne pas, jeep wj 2003 2.7 crd

le logiciel ce connecte au cable mais ensuite pas moyen de lire les code d'erreur, avec le conctac, sans contact et même moteur tournant rien ne se passe.


22. December 2015 11:35
We will work with android on mid January and hoping to finish within couple of weeks.

22. December 2015 09:40
Hello. When will the android app software come?

19. Dezember 2015 10:39
Andreas Sterzenbach
Hi, software works fine with iParaAiluRy ELM327 USB Interface bought on amazon:
It has the PL-2303 XA/HXA chip build in, which only works on windows XP and Windows7, myself I use an Eeepc with windows XP.
Engine and transmission errorcodes reading and erasing perfectly!!!
I´m looking forward for the android version.
Many thanks to the developer, who made it possible to read and erase error codes on Jeep WJ/WG 2.7 crd!!!

16. December 2015 22:00
Hi, software works like a charm.
Used USB ELM 327 v1.5 Chinese clone. Bit of a gamble, but worked first time!
Costs about 7 euro's on ebay which includes international shipping!
Slow on arrival (takes about 2 weeks), but quality seems ok on first glance. Comes with driver CD, but didn't need that. Plug and play on Windows 7.

Able to read and clear two old codes from engine and reads transmission no problem.

ebay link:

seller's name is is eto666

Order and use Chinese clones at your own risk, just sharing my personal experience with this particular product.


5. December 2015 23:05
David Johnson
Hi Kaido,
Thank you so much for your help and advice on my Jeep issues.
I downloaded your free software and bought a ELM from the site you
suggested (
All good, retrieved/cleared the fault codes.
Can't thank you enough - you saved me a lot of cost at the Dealership.

5. Dezember 2015 15:41
Hallo das ELM 327 hat perfekt mit der Software funktioniert!
Super Sache weiter so echt TOP!!!!

Vielen Dank

27. novembre 2015 11:15
bonjour je n'arrive pas a connecter mon elm327 il le reconnais mais connèction impossible.

par avance merci

6. November 2015 21:24
bought the ELM327 usb v1.5a OBDII protocols and when connected to 2002 grand cherokee 2.7crd I get error messages Not supported Engine & Not supported TCM when trying to get fault codes.... trying to find codes and clear (in limp home mode), cleaned all contacts on gear selector module and want to clear fault codes with no success :(

3. November 2015 01:21
Hi, I would like to thank you for your software, it is amazing!!!
It works with my old Serial-USB ELM327 ver1.3a OBD interface on Windows7 32 bit.
(first pluged in the ELM, let windows to install the driver to COM9, then start your Software. Choose COM9 and it worked first time!)
Your software were able to read both Engine and transmission error codes and cleared them as well.
Thanks again.

30. October 2015 00:00
Hi just to let you know your program worked fine on my 2002 grand cherokee. I had a list of fault codes resulting in limp home mode and it cleared the lot! fantastic!! thank you very much.Don't suppose you do one for the ABS system as I've had a speed sensor fail and need to clear the light after I've replaced it. Thanks again anyway.

6. October 2015 09:42
Dag Erik Johansen
Windows 8.1 enterprise (USB type ELM327 adapter). Device manager named port:com3, no other ports present. Software found and connected to com3 but did not communicate With car. Renamed com3 to com1 in device manager and everything worked fine.

7. September 2015 15:25
(The same Tom like below)
With the USB type of ELM adapter - it works like a charm!
Great software - the Android version wuld be perfect add!


29. August 2015 14:58

So far with my BT ELM version on Win10 Dell laptop I was unable to read anything. I'm not sure if ita due to the PCELM connection or more to the ELM istelf. I can only say that with the same adapter and my cellphone I can connect to Jeep with some OBD2 apps and see basic parameters.

I will try to oder the recommended usb version of adapter and gove it a try.
But it would be great if this will work as Android APP with the BT adaper. It would be just perfect!


23. August 2015 20:49
Works like a charm with chinese ELM327-USB! Cleared 5 engine + 5 transmission fault codes just in minutes. Luckily it seems that all codes were based on temporarily weak battery. Thanks!!!

18. August 2015 23:46
Thank you guys, the program works fine! :-)

14. August 2015 14:11
Thank you guys, the program works fine !
I buy yours elm327 recommandation, it's ok
Have a nice day!

8. June 2015 17:10
At last someone made a program to clear Jeep codes. Cleared P2210 and car running again! Used Win7 and OBDLink SX Bluetooth device.
Thank you very much.

6. June 2015 00:44
the program cannot open bluetooth ports and popups error window

26. May 2015 19:21
This is test message to see how feedback will be displayed.