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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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Can I use obd-elm327 or vgate i-car2 to get turn signal status?

I want to use OBD to get turn signal status on my car. My car is Toyota Yaris 2008. Is there any OBD products can do this or someone do the thing like this can share your experience for me?
Lee Chun
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Can I connect to my car's can bus with an elm327 interface?

I've been fiddeling around with a bluetooth elm327 device I bought a few months ago and am able to get standard obd infos like vin, rpm, speed etc. But as I just read about recently obd2 and can are not the same. I've tried to sniff on my can bus…
Beejay
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OBD-II iOS WiFi Connection

I am trying to write an iOS application that connects to an OBD-II Interface over WiFi (specifically the OBDLink MX WiFi Scan Tool). I have written some basic socket code taken and I am able to open a socket to 192.168.0.10:35000. I receive the…
Clay
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Understanding the data from OBDII protocol

I am currently developing an application for Android which connects to an OBD device (Using ELM 327 Mini) and reads its data. I am relatively new to the OBDII protocol, I just started working with it like a month ago, but using the official…
Mileni
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Communication between OBD device (STN1110) and android over Wi-Fi

Hi I am developing an android application , in which there is a communication part between an OBD device and android device , I am planning to use the STN1110/OBD II protocols for communication over Wi-Fi network. I have checked in Google but it…
Gokul
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OBD II is constantly sending " 7F 01 12"

I am writing a program that gets the speed and fuel rate of a car from the OBD II computer. Getting the speed works fine, but I always get "7F 01 12" when asking for the fuel rate. How can I fix this? I am using this to get the data from the OBD,…
bijan311
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OBD II Command to get distance

I am trying to get distance the user has passed from the last time that the codes cleared "Distance traveled since codes cleared" http://en.wikipedia.org/wiki/OBD-II_PIDs But I am not getting any data. I am using this open source library.…
Shvilam
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OBD-II Simulator on OS-X

Has somebody installed OBD-II simulator on mac? I tried downloading it from this site - http://icculus.org/obdgpslogger/obdsim.html for OS-X. After installation and opening ObdGPSLogger, I can see GPS logger window and different parameter gauges.…
Madhu V Swamy
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Pyserial, Getting extra info from OBD Device

I am new at programming and am trying to communicate with my vehicle with an OBD II device. Serial to USB. I've done what I want it to do but I get the command I entered to print out. How do I just get the information from the device? Heres my…
PythonNovice
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Using pyUSB to read data from ELM327 OBDII to USB device

I am having problems using the pyUSB library to read data from an ELM327 OBDII to USB device. I know that I need to write a command to the device on the write endpoint and read the received data back on the read endpoint. It doesn't seem to want to…
mcpolandc
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How to interface with obd ii elm327?

Do I have to purchase this in order to get all the PIDs and the full instruction set for communicating with the car's obd ii interface via an ELM327? I tried looking for some kind of api for the ELM327 connector, but couldn't find any documentation…
Jaigus
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ELM327 Returning "ERROR" when sending OBD Commands

I am currently working on an Android Application to Read from a vehicle's OBDII Port via a ELM327 bluetooth dongle... For those of you who dont know much about the ELM, I would reccomend this data sheet, it has been very helpful... Data Sheet I am…
Bubo
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How to get Driving Behaviour Score between 0 - 10 from Overspeed, Harsh Acceleration, Harsh Decelaration, Harsh turning counts and Distance travel?

Note: Please before giving a negative point please first consider that this is new for someone like us and I have tried multiple things but failed so I have come here for the solution. I want to generate a driving behavior score based on the OBD-II…
El_Dorado
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I have 2 USB2CAN interfaces, how do I connect them together?

I have 2 Korlan USB2CAN devices. I would like to connect them together so when one talks it sends it to the other interface and when it gets a response its send back to the originating device. I am using linux and have two interfaces at the moment…
Nate Tuttle
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Veepeak V11 ELM327 bluetooth connection problem with Raspberry pi4

i am writing here because i have an issue with the connection of an OBD device (Veepeak V11) to my raspberry pi4. When i connect the device to my phone or laptop it works perfectly but on the raspberry i found a lot of issues. Speaking of software,…
he3rzi
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