This is a rewrite of the OBD-Java-API by Pires (which is no longer being worked on!) for dotNET, specifically in C#.
I created it since a project I worked on required accessing OBD vehicle data over bluetooth.

It should work alright, but there is some weirdness with the Bluetooth sockets which might cause hangs. Use with caution and test and debug before deploying to production.

I have no intention of maintaining this project in the future.

Before opening an issue or using this library, please take a look at the following resources:

• Understanding OBD
• The ELM327

• JDK 7
• Maven 3.1 or newer

mvn clean install

<dependency>
  <groupId>com.github.pires</groupId>
  <artifactId>obd-java-api</artifactId>
  <version>1.0</version>
</dependency>

dependencies {
    compile 'com.github.pires:obd-java-api:1.0'
}

After pairing and establishing Bluetooth connection to your ELM327 device..

...
// retrieve Bluetooth socket
socket = ...; // specific to the VM you're using (Java, Android, etc.)

// execute commands
try {
  new EchoOffCommand().run(socket.getInputStream(), socket.getOutputStream());
  new LineFeedOffCommand().run(socket.getInputStream(), socket.getOutputStream());
  new TimeoutCommand(125).run(socket.getInputStream(), socket.getOutputStream());
  new SelectProtocolCommand(ObdProtocols.AUTO).run(socket.getInputStream(), socket.getOutputStream());
  new AmbientAirTemperatureCommand().run(socket.getInputStream(), socket.getOutputStream());
} catch (Exception e) {
  // handle errors
}

As @dembol noted:

Have you checked your ELM327 adapter with Torque or Scanmaster to see if it works with your car? Maybe the problem is with your device?

Popular OBD diagnostic tools reset state and disable echo, spaces etc before protocol selection. Download some ELM327 terminal for android and try following commands in order:

ATD
ATZ
AT E0
AT L0
AT S0
AT H0
AT SP 0