On-board diagnostics - Wikipedia
On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability. In the United States, this capability is a requirement to comply with federal emissions standards to …
What is OBDII? Everything You Need to Know About On-Board ...
5 days ago · OBDII is a standardized vehicle diagnostic system that monitors engine and emissions performance and reports faults through diagnostic trouble codes. OBD-II, short for On-Board …
Best OBD2 Scanners for 2025, Tested - Car and Driver
Nov 19, 2025 · Did your vehicle's check-engine light just pop on? An OBD-II scanner can point you in the right direction—and potentially save you a bundle. This article was updated in November 2025 …
What Is the OBD-II Port [Working, History, and Uses]
Jul 23, 2025 · OBD-II (On-Board Diagnostics, Second Generation) is a vehicle monitoring system that tracks the performance of the engine, transmission, and other critical components. It uses sensors …
What Are OBD-II Codes? A Complete Guide by Kelley Blue Book
OBD-II codes alert you when your car is having issues – everything from airbags to brakes. The most common place to access them is through the OBD-II port under your vehicle’s steering...
OBD2/OBDII: The Ultimate Guide to Onboard Diagnostics
Mar 3, 2025 · Learn about OBD2, how it works, its compatibility, and how to read trouble codes. Discover the benefits of onboard diagnostics (OBDII) for car maintenance and repairs.
Best OBD-II Scanners of 2025, Tested & Reviewed - Road & Track
Sep 15, 2025 · That's where OBD-II scanners come in, giving enthusiasts and everyday drivers a window into their vehicle's diagnostic systems.