Trouble Codes - The device reads trouble codes. It can be with or without descriptive information.

Readiness Monitors - OBDII systems have the ability to perform many self checks.  These are called readiness Monitors.  It is helpful to be able to view the status of the various readiness monitors when diagnosing vehicles problems.

Datastream - The scan tools shows actual data from the vehicle.  Generally this means OBDII generic data only.

Bi-Directional Control - Some scan tools have the ability to send a message to the vehicle and cause an action to take place.  For example, you can command the left turn signal to operate.  Generally bi-directional control is supported through manufacturer specific software in the scan tool

Reprogramming - Specifically J2534 reprogramming.  This required specialized hardware.  You will need to sign up with each vehicle manufacturer to obtain the necessary reprogramming files.

SRS (Airbag) - Please note that SRS (Airbag) systems may or may not be accessible through a scan tool.  It is entirely possible that the vehicle you want to test will not support this test method.  You will need to confirm this functionality from the vehicle manufacturer.

ABS - Anti-Lock breaks. Please note that ABS (Anti-lock breaks) systems may or may not be accessible through a scan tool.  It is entirely possible that the vehicle you want to test will not support this test method.  You will need to confirm this functionality from the vehicle manufacturer.

Solution Based Software - The scan tool attempts to give you more information that simply data and/or codes.  It tries to help you identify the problem.

Internet Access Recommended - Full features of this tool are best used when you have internet access.

Data Recording - The tool records data.

Graphing - The tool graphs information.  This could be on screen or through the use of PC Software.

PC Based - The tool uses the PC as the display device.

PC Required - You can't use this tool without a PC. 

OBD-1 - The tool works on pre-1996 model years.   Please note, no further method was used to explain this detail.

OBDII Generic - Supports OBDII communications protocol.

Asian - The tool manufacturer claim Asian coverage. 

European - The tool manufacturer claims European coverage. 

Domestic - The tool manufacturer claims Domestic coverage. 

Heavy Duty - The tool manufacturer claims Heavy Duty coverage. Please note that heavy duty coverage is not as easy to determine as passenger/light truck coverage.  Please refer to the vehicle manufacturer for more details.

Enhanced Datastream - The vendor has indicated they read Enhanced (factory vehicle specific) datastreams on this make of vehicle.