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?

The OpenXC interface (OBD-II connector, 10/100Mbit Ethernet

Recommended Practice on Proper Use of the OBD-II Port (CTA-CEB37) – Consumer Technology Association®

Best OBD2 Scanners for 2024, Tested - Car and Driver

On-board diagnostics - Wikipedia

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

Carevas Professional Auto Car OBD-2 Break Out Box On-Board Diagnostics Breakout Box OBD-II Protocol Detector Diagnostic Connector

OBD2 Male to 9pin J1939 Female adapter cable. OBD2 Male to type 2 green 9Pin Female Port. Can be used for converting connection from truck round 9 pin

16 Pin OBD II 2 Male Port to Female 9 Pin Truck Diagnostic Scanner Cable Adapter

OBD2 Connector Repair- How to create a lasting repair

2 to 1 OBDII Connector

Lexus OBD-II Diagnostic Port Location - YOUCANIC

Blog - What is OBDII? The High-Tech Port In Every Car Since 1996

Universal fitment designed to allow you to connect two devices to the OBDII port. The plug is a right angle for minimal interference.

Universal OBD-II Splitter

Best OBD-II scanners