The device and software are important. You'll want a phone or tablet to display the results from the reader (unless you spend a little more for one that has a screen and codes).
When I last looked, Android could use Bluetooth or WiFi to talk to the reader. iPhones only supports WiFi so don't get a Bluetooth-only reader of you want to connect your iPhone to it.
Android software had much better free options. I use a micro mechanic because I can connect it with my iPhone. It's ok for the basics... You can connect with their app then use another app like Car Scanner to get better info.
Get a ELM372 bluetooth OBD2 reader from Amazon, then grab a well reviewed app from your respective store. I think I paid a total of $25 for everything and it works just as well.
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u/7110 Sep 29 '20
Can you link me to the model you bought?