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 …

A car repair resource site that helps you diagnose vehicle OBD, OBD-II, and OBD2 problems. We have many articles on how to diagnose and repair many check engine light codes.

Modern on-board diagnostic systems take a lot of the guesswork out of figuring out what's wrong with your vehicle. Learn how OBD works.

Feb 20, 2025 · On-Board Diagnostics, commonly known as OBD, revolutionized how we maintain and repair vehicles. These systems monitor vital engine and emissions functions, providing …

OBD systems monitor emissions to ensure that vehicles meet minimum requirements at all times. They also alert users when emissions exceed acceptable limits so that the issue can be …

May 19, 2025 · Curious what OBD stands for in cars? Learn what On-Board Diagnostics means, how it works, and why it’s essential for vehicle maintenance.

Aug 26, 2025 · OBD stands for onboard diagnostics, and an OBD-II scanner can check on your vehicle's vital systems, providing valuable information about warning lights, airbags, ABS, and …

On-Board Diagnostics, or OBD, is a computer-based system built into all modern cars. It continuously monitors the engine, emission controls, and other key systems to detect …

OBD stands for “onboard diagnostics,” and is a protocol included in all modern vehicles. OBD2 software lets you access and interpret the data from your vehicle’s electronic control unit (ECU).

Aug 26, 2024 · Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs. Your check engine light can come on a host …