I have a Autel MaxiDiag us703 OBDII /EOBD & Pre-OBDII Scanner and found it will not read the codes on my wifes 2002 Suburu Forester Codes. That's Suburu for you.
That unit will only be sort of compatible with a single year model sold in the united states, no other Zs were OBDII compliant. Just FYI.
If you wanna just to read/reset the codes you can go with http://www.ebay.com.au/itm/USB-Inte...Subaru&hash=item33bf7c3ffd:g:IDcAAOSw8w1X2LUP This will give few more option (driver installation sucks) http://www.ebay.com.au/itm/USB-KKL-...948256?hash=item2808a86fe0:g:YaQAAOSwuTxWATjM And with this you can reflash subbies ecu... http://www.ebay.com.au/itm/Tactrix-...566229?hash=item28016c4b55:g:NS0AAOSweW5VUsMj