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Questions tagged [obd-ii]

OBD-II is an automotive term referring to the diagnostic system of a car. The OBD-II specification includes standardized hardware and message protocols. With an OBD-II connector, it's possible to read the diagnostic data from the car, e.g., vehicle speed, RPM, mileage, airflow.

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how to connect to OBD-sensor with python?

I can't reach connect to the remote obd-sensor. Tried it out with the python-obd but there is no explanation about remote connection (Connection through the phone text messages is good). In the python-obd doc I see only "connection string" without…
JkLondon
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How to send an AT commands with Header and Data Bytes

this is my first Ask :D and i really haven't find something around. I've already developed an app that read a lot of informations from attached ELM327 via standard OBD Pid commands and some other via CanBus. But i have to read from different Headers…
Duca Oscuro
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IOException: read failed, socket might closed or timeout, read ret: -1

I've been facing this issue while connecting OBDII devices. This issue's occurrence is very random varied across cheap Chinese OBD devices to expensive branded ones. For Bluetooth communication in flutter, I'm using the Flutter Bluetooth Serial…
vibu
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Sending AT cmd to BLE OBDII device

I am building an app but I wanted to test the device before start coding. The device that I am using is veepeak BLE OBDII. I can connect to it using other popular apps with no issue e.g. CarScanner. When using LightBlue app (BLE testing app), I can…
A J
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Looking for an example of a OBD-II complete data frame

I'm developing an OBD-II reader where I want to query requests to read PID parameters with a stm32 processor. I already understand what should go on the data field, but the ID is giving me a headache. As I have read, one must send 0x7DF to broadcast…
Alex Ghilas
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How and what would I get from a car rain sensor?

I am looking for an answer on how to acquire data for the vehicle rain sensor and automatic wiper data from any vehicle. For example I know that with Carberry (a raspberry pi) it provides a lot of OBD features, however, I cannot seem to find…
user15158698
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I am not able to get Fuel level from nissan models through OBD. What are my option if i need to get the fuel level

I see that in various nissan models, Fuel level is not supported in OBD. However the dashboard does show fuel level. How are they showing it? Is it some manufacture specific PID that is used? If i need to show fuel level to my customer, what are my…
230490
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Does someone know how to connect and read from OBD-II (ELM 327) in Xamarin?

I'm new to this and I'm finding really hard to understand how to receive data from the OBD-II, and what I find about it it's only for Android, java, but I'm looking for C#, Xamarin.Forms. My OBD-II is currently connected to my car, and what I want…
João Santos
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Build errors when importing an existing project to Android Studio from GitHub

I am new to Android Studio so I am trying to edit an existing project to understand the environment. My idea was to make an app to control an OBD device (for cars), I've found a lot of projects but I can't import them without receiving errors and…
Tripo's
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Unable to display the data fetch from the OBD scanner

I am using the library from the following link https://github.com/md-sohrab-alam/android-obd-reader. I followed the same coding as the one display on the read me page but I only get an empty screen. What could be causing this issue. There is no…
John Alvin Joseph
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Communicating with LeLink OBD-II BLE device in Nissan Leaf with Core Bluetooth

Hi this OBD BLE device (https://www.amazon.com/LELink-Bluetooth-Energy-OBD-II-Diagnostic/dp/B00QJRYMFC) is the one I'm using to connect over bluetooth my own iPhone. I have been able to find the right service and the characteristic to write to and…
Terry Bu
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could not open port /dev/rfcomm0: [Errno 16] Device or resource busy: '/dev/rfcomm0'

I'm trying to interface a Raspberry Pi 3B to a Bluetooth ELM327 OBD scanner but I'm having some troubles. I've connected the raspberry to the OBD Scanner by running the following commands from the terminal: bluetoothctl power on default-agent pair…
KLiyo
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ImportError: No module named obd

I have installed obd library in python using : pip install obd. But when I tried to import eventlet this error occured: pip install obd Defaulting to user installation because normal site-packages is not writeable Looking in indexes:…
KLiyo
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Build make file arm microcontroller

We bought an ECU emulator made with stm32f103, The source files are attached to them. But there is no file (BIN or HEX) and there is a make file that needs to be built, but when I tried to create it but it is not possible for me, If you have…
Pooya
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How to replicate the Traccar Sever connection to a device (castel protocol by TCP) in a single Java class? (to connect, disconnect encode and decode)

THE CASE: I have a TCP client what send a data and I want to hear the data from my server. So, here, everything okay. I decided make an socket server on port 9876 to listen this device (using Java 8). The data which I receive is weird, when I…
Simón Farias
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