Anybody here ever noodle around with OBD2? I'd like to know more about it. I've found some links for software, cables, and such, but nothing about the basic nuts and bolts stuff.
Posted on 2003-09-05 22:29:25 by T_Volk
It is necessary to define abscure acronyms at least once when they are first used so that others don't have to waste time and bandwidth asking, "What does this mean?". Ratch
Posted on 2003-09-06 05:31:28 by Ratch

Sorry. It's On Board Diagnostics 2. If your car was built in 1996 or after, there's an electrical connector somewhere
within reach of the steering wheel that you can plug a scan tool into, to monitor engine conditions, trouble codes, and such.
I had seen it mentioned in another thread in here some time ago.

Posted on 2003-09-06 20:20:55 by T_Volk
Its definitely a worth project. However, short of google, i wouldnt know where to start gathering information on it...

Definitly someting to strive for... I dont trust *any* mechanic out there :rolleyes:

Posted on 2003-09-07 22:18:31 by NaN

There's an SAE standard for the command set, and SAE and ISO standards for the communication protocals. You can download
those if you're willing to buy them ( I'm not. Call me cheap.). I guess that would be a place to start, but I'm pretty ignorant when it comes to hardware, and would like to hear from someone who has done this or something similar.

You can get a pretty decent scan tool for 150 to 200 bucks, which is substantial but not prohibitive. But I'd still like to know more about it. There's just something about seeing that connection there... unused.... with all those bits on the other end.....

Posted on 2003-09-08 22:04:46 by T_Volk
Try this link:

I think I am getting interested in this too, as my car ages.
Posted on 2003-09-12 21:24:39 by VVV

Nice link. Thanks.

Posted on 2003-09-12 22:00:10 by T_Volk
Here is another link. It contains the J1850 standard, though an older version. Comes in handy, though.
Posted on 2003-11-06 11:50:22 by VVV