Already an affordable option, right now you can save over $25 on this diagnostic code reader from trusted brand Ancel.

Code readers come in all shapes and sizes. As noted earlier, even cheap ones will get the job done if all you plan to do is read and clear trouble codes. Perfectly usable, though very simple ...

A cheap code reader capable of performing basic tasks like reading and clearing DTCs is probably all that you'll need for sporadic diagnostic work.