OBDII Code Reader Free for Android

Developer's Description

Version 2.3

Android Mobile and Tablet


1. The car must be OBD-II compliant to use the tool

2. Bluetooth Adapter ELM327 or compatible

3. The minimum Android OS is : 4.0 (IceCreamSandwich)

4. The bluetooth device on the phone(Tablet) must be enabled and paired with the bluetooth OBD-II adapter


* The functionality of Auto detect the OBD-II protocol let's the app to be very easy to use

* Displaying the description of the protocol used in your car

SAE J1850 PWM (Ford)

SAE J1850 VPW (GM)

ISO 9141-2 (Chrysler, European, Asian)

ISO 14320 KWP-2000

ISO CAN 15765 - 11bit, 29 bit, 250Kbaud, 500Kbaud (most models after 2008)

* The app has standalone database (SQLITE) with over 20,000 descriptions for specific and generic trouble code

* The trouble code database will be updated every year

* Supports all OBD-II diagnostic trouble code (DTC) formats

P0xxx, P2xxx, P3xxx - Generic Powertrain DTC

P1xxx - Manufacturer's Specific DTC

Cxxxx - Generic and Specific Chassis DTC

Bxxxx - Generic and Specific Body DTC

Uxxxx - Generic and Specific Network DTC

* The functionality for the DTC code lookup, You can still use this function, even if your phone did not have the

* Function Reading out car's live sensor data. (only in PRO version)

bluetooth device or the bluetooth device is out of order. This functionality is fully free in the FREE VERSION.

* Showing you the engine status, when the app is connected to the bluetooth adapter (at the car's data link port). If the car has got any trouble code, the engine status image will change it's color from green to red and vice versa periodically,

* When the engine is running, the analog gauge shows you the engine revolutions per minute (RPM)

Connect to real car ECU:

Once you have the bluetooth OBD-II adapter plugged into the car's OBD-II ports and powered on, you need to connect to the car's system computer via that bluetooth adapter, by pulling down the option menu and select item "Connect to OBD-II Adapter", a dialog window will appears and shows a list of paired devices (one or more devices in the list), each paired device has two information as following:

Name of paired bluetooth device (for example: obdii-dev)

Max address (for example: 77:A6:43:E4:67:F2)

The Max address is used to distinguish two or more bluetooth adapters have the same name.

You must choose your bluetooth OBDII device by select the correct it's name (or it's max address) in the list and click on the item, then the app starts connecting process and autodetects the OBD-II protocol.

If the process finished successfully the protocol description will be displayed on screen (control panel) and the notification "Connected to OBDII Adapter" will appear on the status bar.

If the process was failed you can try it some times (we assume that the bluetooth OBD-II adapter is working well)

Connect to simulation ECU:

Use other android device with "ECU Engine Sim" app installed on it, this app simulates an engine's computer. You connect directly to it via bluetooth as above

If you only use the lookup function you do not need the above connection step

Now you are ready to read out all the DTC codes or Clear them if you want

The app supports the specific DTC Descriptions of the following manufacturers:

Acura, Audi, BMW, Chevrolet, Chrysler, Dodge, Jeep,

Ford, Honda, Huyndai, Infiniti, Isuzu, Jaguar, KIA,

Land Rover, Lexus, Mazda, Mitsubishi, Nissan,

Sabaru, Toyota, Volkswagen, GM, GMC, Fiat, Lincoln,

Mercury, Pontiac, Skoda, Vauxhall, Mini Cooper,

Cadilac, Citroien, Peugoet, Seat, Buick, Oldsmobile,

Saturn, Mercedes Benz, Opel.

Note: The correct choice of the vehicle manufacturer affects the proper description search result of specific codes

The restriction of the free version of OBDII Code Reader Free is that, the app only shows the demo DTC codes. To read out the real DTC codes and real live sensor data, Please use the version of OBDII CODE READER PRO

Full Specifications

What's new in version 2.3

Version 2.3


Release November 13, 2018
Date Added November 13, 2018
Version 2.3

Operating Systems

Operating Systems Android
Additional Requirements None


Total Downloads 760
Downloads Last Week 0
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