Ever wonder what’s happening on your vehicle’s data bus? Here’s an open source software tool suite which hopes to open this data to your Linux box. “Freediag is a suite of vehicle diagnostic protocols and an OBD II (mostly) compliant scanning tool, currently for Linux platforms. Multiple graphical user interfaces for the scan tool are under development – but right now, you have to use a command-line interface to scantool.
OBD II is a standard for vehicle diagnostics relating to emissions implemented on all US vehicles since the mid 1990s. Europe has just introduced a standard called EOBD which is basically the same.”
This is a program which seen sporadic development over the years, with the last code release in 2011. They welcome any assistance in code dev and testing.