Problems with OBD2 interface

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Problems with OBD2 interface

Postby Bartul on Fri Mar 30, 2012 5:44 am

Hi!

I have car diagnostic device ELM327 with usb port connection, but Mint can't recognize it.
Here is the list of devices from terminal:

~ $ lsusb
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 09da:000e A4 Tech Co., Ltd
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 7073:3037
Bus 003 Device 002: ID 046d:c215 Logitech, Inc. Extreme 3D Pro
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

That device is listed as "Bus 003 Device 003" and, as you can see, has no description.

Any suggestions?

Thanks!
Bartul
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Re: Problems with OBD2 interface

Postby AlbertP on Fri Mar 30, 2012 7:51 am

That it has no description just means that nobody has submitted the name of the device on https://usb-ids.gowdy.us/ yet. You don't need a proper description for the device to work, you need a driver instead. Drivers don't look for descriptions, but use 7073:3037 codes or the like instead.
I found a Polish forum thread about it, which I translated with Google Translate. It says FTDI, manufacturer of the device, has a Linux driver to be able to use this interface as a serial port.
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Re: Problems with OBD2 interface

Postby Bartul on Sun Apr 01, 2012 8:20 am

Thanks for your help,

I installed ftdi driver as you said, but the device did not work so I searched the internet and found this command:

modprobe ftdi_sio vendor=0x7073 product=0x3037


Now the device is working properly. :D
Here is link that might help someone with same problem: http://ftdi-usb-sio.sourceforge.net/
Bartul
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