Send and receive data via BLUETOOTH

Hi guys,
I was able to connect my app to my OBD scanner via bluetooth.
Can someone help me with just one thing?

Can you tell me if I am missing anything when I actually send me command to the OBD2 scanner?
My code is below. I basically call ConnectBluetooth just to connect the socket. If it connects, it returns a 0 else a 1 if there's an error.

SO, once I am connected to the socket, i want to issue the command to the scanner and receive its response.
Am I doing it correctly?
Or am I missing any steps?

if (btSocket != null)
            {
                Task<string> SubmitTask = new Task<string>(ConnectBluetooth);
                SubmitTask.Start();
                //Progress.Visibility = ViewStates.Visible;

                string Result = await SubmitTask;

                if (Result == "0")
                {
                    Android.Widget.Toast.MakeText(this, "Connection Successful!", Android.Widget.ToastLength.Short).Show();
                    String CommandToOBD = "010D" + "\r";
                    // convert string to stream
                    byte[] byteArray = Encoding.ASCII.GetBytes(CommandToOBD);
                    mmOutputStream  = new MemoryStream(byteArray);
                    mmOutputStream = btSocket.OutputStream;


                    mmInputStream = btSocket.InputStream;

                    StreamReader reader = new StreamReader(mmInputStream);
                    string data = reader.ReadToEnd();
                    //string data = "41 0D FF";           //hex data from OBD2
                    var result = ObdParser.Parse(data);

                    Console.WriteLine(result.Mode);     //mode: 1
                    Console.WriteLine(result.Command);  //command: 13
                    Console.WriteLine(result.Name);     //name: VehicleSpeed
                    Console.WriteLine(result.Value);    //value: 255 (kph)
                }