ERD50
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Picked this up the other day. It was a lightning deal for about $8 and it seems to work fine. Plugged it in and connected to it with my phone and can read info and codes and reset a CEL with it.
OBD2 Scanner Bluetooth Scan Tool Adapter, Car Code Reader for Android & Windows Devices, OBD Scanner Wirelessly Feeds Your Cars Data To Your Phone! Check Engine Light Eliminator for All Cars! https://www.amazon.com/dp/B01C6CZ0SQ/ref=cm_sw_r_cp_taa_JWPyAbHBYR50C
These are great. I bought one a few years ago for ~ $15. That, and a free app for a phone or tablet does far more than a $50 scanner tool.
Note that while you can clear a Check Engine Light, you won't pass a test like they do in IL, until you've driven enough miles and different conditions for each of the various sensors to collect enough data to actually say "PASS". Until then, they will say "NOT READY", and you can't pass the test w/o them getting past the "NOT READY" state.
Fun to play with, you can see all sorts of data from the car, boost pressure with a turbo, engine load %, on and on.
-ERD50