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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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323 questions
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OBD2 - ELM327 bluetooth simulator

I am developing Android application for connecting to ELM327 for car unit through Bluetooth. Is there any simulator, to simulate ELM327 on Windows 7 through Bluetooth? So I can test my application without a car.
Amsik
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Make Android simultaneously use WiFi to talk to a device and mobile data to talk to a server?

I'm developing an Android application which connects to an OBD2 device by Wifi and app can read Speed, RPM, Engine coolant temperature details etc. So wifi is used only for connecting with the OBD2 device(it doesn't have facility to connect with…
ArchFever
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What is the best way to get fuel consumption (MPG) using OBD2 parameters?

What is the best way to get fuel consumption (MPG) using OBD2 parameters. Below formula is simple but not most accurate, any other formula to get an accurate estimation. The value for vehicle speed is delivered in Km/Hr, to convert to miles…
nayab
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Unable to Get VIN Number response from OBD-2 Device

I need to fetch VIN number from car's controller using plxKiwi-2 wifi obd2 device. I am getting other information like car rpm,speed,throttle position,etc. in correct format. But when I request for VIN Number it gives me below response. 014 0: 49 02…
iCoder
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android bluetooth can't connect

I've been having this problem for a while and haven't been able to figure it out. I have a android application that puts all paired devices in a listview. When you click one of the list items, it will initiate a request to connect to that bluetooth…
Kent Andersen
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ANDROID ELM327/OBD2 PROTOCOL

I am trying to send command from ANDROID to ELM327/OBD2 protocol (WIFI Diagnostic troubles). I downloaded an api or library from: https://github.com/pires/android-obd-reader The problem that this api not have any documentation. We need help about…
toto
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Detect AC(on/off) and Window(open/close) of CAR using OBD

Is there any way to detect AC(air conditioner) and Window(open/close) using OBD. I am refering below links for OBD reader but I can't able to find any way to detect AC(air conditioner) and…
pRaNaY
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How to implement an app using OBD2 (ELM327) like Torque in android?

I am very new to obd2 and elm327. I need to develop an application to get car info using obd2(bluetooth) and elm327. Please any one can help. Thanks in Advance.
Latha
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Send multiple OBD commands together and get response simultaneously

I'm working on application which connects OBD2 adapter and getting the real time data like speed,rpm,throttle position etc..When I read one command at a time, it works fine like by sending command "010C\r", I get current RPM. I think that sending…
NSS
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Read VIN from OBD adapter

i'm working on this app which requires me to read the VIN from the OBD II adapter and check if OBD is connected to the same vehicle. When i'm sending the command(09 02) to fetch VIN i'm not able to get the complete VIN. Every time i send the…
vjamit
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Reading the values from OBD II Bluetooth adapter in the android application

Can anyone give me an idea on how to read the values from the OBD II Bluetooth adapter in an android application. I want to start with scanning for the bluetooth devices from my android application, then after bluetooth device is found, how would I…
Nandagopal T
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Is there an ELM327 / obdkey OBD-II adapter Objective-C programming guide?

I'd like to start coding against an ELM327 based automotive OBD-II Bluetooth adapter in iOS/Objective-C. Is there a guide/primer on how to get started? I would imagine the ELM327 adapter is a serial device... I can probably figure out how to…
NoCarrier
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Connecting to a STN1110

I'm trying to connect to a STN1110 chip via screen. Unfortunately I only get strange characters as response. My understanding is that this is due to the wrong baud rate. I tried several baud rates I could find for STN1100 (9600, 115200, 38400) but…
Zuendi
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How to communicate with OBD-II device

There is OBD-II device like http://www.rczd.com/c/2015/Car_Diagnostic_Tools_0223/41193.html this device provider does not have its web page or documentation source. We have short "quick start" in box and assurance that it support OBD-II PIDs.…
Jacob
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Android OBD-II Bluetooth API sample code not working

I need to develop an Android app that retrieves data from a OBD-II Bluetooth dongle. As first step, I downloaded the API from https://code.google.com/p/android-obd-reader/ and tried to run the Sample Application in it, but it didn’t work for me. Can…
Tikitaka
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