Automotive Diagnostic Scanners -- OBD-I and OBD-II

One accurate diagnosis can save more than the cost of a simple OBD-I or OBD-II automotive diagnostic scanner, just in unnecessary repair parts you don't have to buy and in reduced labor costs or time.

Automotive Diagnostic Scanners: Car Check Engine light analysis, scanners for engine fault diagnosis.
Click here for
repair and upgrade parts,
also car repair manuals
Racing and car books, repair manuals too
Click here for racing and car books
of all types, including repair manuals
Autombile Diagnostic Scan Tools: Analyze car Check Engine light causes, scan for engine fault problems and causes.
Click here for car-care products,
plus auto repair manuals

In addition to the cost savings possible from doing your own diagnosis with your automotive code scan tool, owning an OBD-I or OBD-II code scanner lets you check your vehicle, and those of your friends, for error codes and information whenever you wish.

It happens: Your car is running oddly, but only intermittently that way. Or perhaps it's even flashing a "check engine" message that comes and goes, meaning your engine computer only sometimes can see the problem. Those check engine codes frequently don't seem to show up when you get the car to the the dealer's.

If your car is sometimes running poorly, or has a ragged idle, or seems weak when accelerating or under load, what you do? You can try buying parts and replacing them yourself to confirm your diagnosis. Or you can take time off work and take it to a mechanic or the car dealer, then wait for the diagnosis -- and the bill. Me, I'd rather do the diagnostic tests myself, if I can do them quickly and easily, and at a time that's convenient for me.

Not only that, but many vehicles with code scanner ports will allow you to perform engine diagnostic tests -- such as disabling a particular cylinder's fuel injector, for example -- that vastly speed zeroing-in on where the engine or emissions problem is. All without even getting your hands dirty! In many cases, there's just no other practical way to do many of the tests that can be performed this way.

Note: OBD-I scanners are generally for vehicles through 1995. OBD-II scanners usually cover models from 1996 and up. Many OBD-II scan tools also include coverage for older vehicles as well. Please read the manufacturer's detailed descriptions below, as some tools cover much wider ranges of vehicles than others.

I've spent quite a bit of time searching, and have found a good range of OBD-1 and OBD-11 car code-scan devices. For simplicity, I've listed the least-expensive models first, with the more-expensive models following:


Or, you can Click Here to see the very latest choices in scanners from AutoBarn.com.
Most of the items this brings up will have already been listed above, but they occasionally introduce new scanners and such.

Well, that's a pretty good survey of what's available, from fairly cheap to very expensive. I hope one of the above scanners fits your needs.

Additional auto repair information you might find useful:

Auto repair manuals:
Click here for Chilton's, Haynes, etc. auto repair manuals from J.C. Whitney
Click here to see car various repair manuals available from Auto Barn
Click here for Motorbooks.com, then navigate to their "repair manuals" in the leftmost panel

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Car Diagnostic Scanners OBD-I, OBD-II.  Check Engine Light diagnosis via error code scan tools.


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(C) Copyright 2002--2011 by M. O'Gara -- all rights reserved.