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 …

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.

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.

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.

Apr 25, 2023 · OBD stands for On-Board Diagnostic. It’s the standardized system that allows external electronics to interface with a car’s computer system. It has become more important …

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 …

Oct 12, 2023 · OBD, or on board diagnostics, was introduced by General Motors in 1981 to monitor the emission control system in the car. In 1986 California mandated that all cars sold …

OBD stands for “ O n- B oard D iagnostics.” It is a computer-based system originally designed to reduce emissions by monitoring the performance of major engine components.

Apr 28, 2023 · OBD stands for “On-Board Diagnostics,” an electronic system that monitors and regulates your car’s performance. It uses data collected from a network of sensors to monitor …

Nov 24, 2025 · The BlueDriver Pro, a favorite Bluetooth OBD-II scanner of ours, is down to just $70—it's all-time low price. It offers pro-level diagnostics, live data, and a great app.