[Covenantor]

Finally, an affordable OBD2 code reader.

Thanks for the tip on the Elm 327.

Five friends picked up the Innova Battery monitor, all are happy, and one elderly woman able to avoid a full alternator replacement she didn’t need.

[nascarnation]

I use a phone app called Dash Command.
Seems to do the job, but there are a bunch of similar ones.

Also FWIW O’Reilly Auto Parts can read ABS codes, and Autozone doesn’t. Not sure if it’s just local or everywhere.
They helped me identify a bad ground point on my 99 truck that was displaying the ABS light, a free repair.