WJdiag Pro - Diagnostics for J

🇺🇸 United States
JeepsWJ  | 
44
ASO score
Text
49/100
Reviews
60/100
Graphic
40/100
Other
0/100
rating
App Rating
4.6
rating
Votes
24.56K
rating
App Age
7y 2m
rating
Last Update
Nov 24, 2025

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Installs
6.5K
2M
-100%
Rating
4.54
4.25
+7%
Number of Ratings (Voted)
13.7K
2.2M
-99%
App Age
7y 1m
7y 2m
0%
Price
$20
$2
+910%
In-app Purchases Price
$0
$48
Update Frequency
109d
139d
-21%
Title Length
30
24
+25%
Short Description Length
80
69
+16%
Description Length
2 600
2 816
-8%
Number of Screenshots
2112
1048
+101 %
Has Video?
No
0% has videos
Size
0MB
0MB

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Downloads

Downloads Graph
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Total
6.5K
Last month icon
Last month
79

Text ASO

Title (
Characters: 30 of 50
)
WJdiag Pro - Diagnostics for J
Short Description (
Characters: 80 of 80
)
WJdiag Pro is professional diagnostic application for Jeep Grand Cherokee WJ/WG.
Description (
Characters: 2600 of 4000
)
WJdiag Pro is made for diagnosing issues of Jeep Grand Cherokee 2002-2004 year, WJ/WG models with 2.7 CRD engine. WJdiag is working with Bluetooth ELM327 device through OBD2. Supported functions of WJdiag Pro are listed on our website tutorial page at https://jeepswj.com/wjdiag-tutorial We highly recommend to use good ELM327 and avoid fake Chinese devices. Most of 10 EUR Chinese ELM327 devices do not support ISO 9141-2 and J1850 data protocols that are needed for Jeep WJ diagnostic and will display connection error even if some other generic diagnostic app can connect to some module. WJdiag is customized app for Jeep WJ/WG, it can not connect with your car if your ELM327 can not handle data that Jeep needs. There are no problems with good ELM327 devices and they can connect to car correctly. Your ELM327 compatibility can be checked with WJdiag Free. WJdiag has all options of professional car diagnostic - Fault Codes, Sensor Live Data, Tests and Coding. All electronic modules that 2.7 CRD Jeep has are supported. All electronic modules except Engine, Transmission and Shifter are supported on gasoline and 3.1 diesel model. In addition WJdiag Pro can access to many Chrysler Group cars made between 1998 and 2005. Electronic modules that WJdiag can access: Engine (2.7 CRD only), Transmission (2.7 CRD only), ABS, Airbag, Shifter Lever (2.7 CRD only), SKIM, Body Computer, Automatic Temp control, Driver Door, Passenger Door, Electro Mech Cluster, Overhead Console, Navigation System, Radio, CD Changer, Park Assist, Rain Sensor, Adjustable Pedal Module, Satellite Audio Receiver, Hands Free. Engine support for 2.7 CRD models: Fault codes reading with ID code and code explanation, Freeze Frame. Fault codes clearing Live Data (51 values, it is every value that 2.7 CRD engine has). Logging with options Input / Output (26 values - switches, EGR, relays, Steering Wheel etc.) Injector Test and Coding Transmission support for 2.7 CRD models: Fault codes reading with ID code and code explanation, Freeze Frame Fault codes clearing Live Data (22 values), Logging with options. Input / Output (23 values - solenoids, gears, Shifter signals, Transfer Case switch etc.) ABS support, all WJ/WG models: Fault codes reading and clearing Live Data, Logging with options Input/Output values Pinion Factor coding (Speedometer correction) Other control units randomly have Fault Codes, Live Data, Input/Output and tests. Before you buy our WJdiag Pro application, please try our WJdiag Free to confirm that your ELM327 diagnostic device can read data from your car.}
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Rating & Reviews

Reviews Overview
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Rating
4.6
24 555 voters

Some Latest Reviews

Richard
26 Nov, 2025
3
After a day of use it wont connect, always have to uninstal and install app again. Now it says install pro version to use functions, i have the Pro version! Please help, thx.
Adam Webb
06 Nov, 2025
5
I was able to recalibrate my speedometer on a 2003 Jeep Grand Cherokee Overland WJ. That's worth the cost of the app right there!
Tom Young
04 Oct, 2025
5
Worth it! I have a US 2002 4.7L WJ, it cannot communicate with the engine or transmission computers, but DOES work for everything else, such as abs and airbags. it can even calibrate your speedometer for tire size! the cost of the app is a lot less than the money I was going to spend on parts I didn't need. There are lots of other options for engine and transmission apps, this one handles everything else. JScan doesn't support WJ so this is the best option!
Sergio Gonzalez Arévalo
17 Sep, 2025
3
Fallo inicio.Al intentar entrar se cuelga y se sale de la aplicación
mivozipip mivozip
14 Sep, 2025
5
Pues tenía la versión gratis y me conecta y detecta y borra fallos perfectamente, puedo borrar la luz mil de la caja automática del Grand cherokee 2.7 crd. El vehículo vuelve se desbloquea con solo borrar con la versión gratis, con la de pago se puede saber incluso que cilindro falla la inyección muy útil para saber si esta parejo el caudal de inyección y saber que inyector podría estar mal (Ojo para poder ver la inyección hay que buscar dentro de otra pestaña que aparece desapercibido.)
Robert Crawford
17 Jul, 2025
3
App keeps stopping won't open worked well until I tried to open it today
Plan Z
12 May, 2025
5
Keine Motor oder Getriebe Daten 20 € für die Katz .! ELM 327 Kompatibilität Test ist Positiv !!! Ich muß mich korrigieren es lag wirklich am ELM 327 !!! Die App funktioniert einwandfrei und ist ein Segen, ein muß für jeden 2.7 WG/WJ Fahrer. Danke für's bereitstellen der App Entschuldigung für meine Dummheit.!
Raul Gonzalez
25 Mar, 2025
1
He tenido problemas con la aplicación. Escribí a soporte técnico y NO CONTESTARON. Sinceramente, no sé por qué ponen su email de contacto en su web si no van a responder cuando alguien les pregunta algo
Evgenij A.
11 Jan, 2025
5
Вообще не жалею, что купил, возможности у приложения огромные!

Other

Additional Information
Rating:
4.56
Voted: 24.56K
Google Play Link:
Price: 23.78 $
Website:
Email:
Privacy Policy:
Categories: Auto & Vehicles
Size: -
Installs: 6.47K
App Age: 7 years 2 months
Release Date: Nov 13, 2018
Last Update: Nov 24, 2025
Version: 28.0
Version history
28.0
Nov 24, 2025
27.0
Aug 28, 2025
Version history