I was sceptical about what I'm about to say a few months ago myself, however I ordered a bluetooth obd2 scanner and I was amazed at how great it works. The brand I went with is called veepeak, me and my brother have both used it dozens of times and best part was it's less then $30 canadian. You just plug it in and hook up your phone or laptop and you can get any information you need! I swear I'm not paid to say this just want to make it more known that they definitely can be a cheap and effective option