What Is the OBD-II Port and What Is It Used For?

If you purchased a car built after 1996, it probably has an OBD-II port. But what is it for, and how do you diagnose errors with it?

Chevy and GMC Truck/SUV Dead OBD2 Port Quick Fix - OBD2 Not Working

BlueDriver OBD2 Scanner, Tested By Experts (2024 Review)

Installation guide: Vehicle Data Device plugged into the OBD-II port – Device Help

Can you use more than one device in your OBD-II port? - The Solid Signal Blog

The OBD Port: An In-Depth Guide - FleetGO®

Best OBD2 Scanners for 2024, Tested - Car and Driver

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Everything You Need to Know About OBD II Scanner

obd ii - Compiled list of OBD-II protocols used by various vehicles - Motor Vehicle Maintenance & Repair Stack Exchange