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.

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 …

An OBD-II scan tool is an incredibly useful automotive diagnostic device, but it's not magic. Here's what it can and can't do.

Jun 2, 2025 · OBD stands for On-Board Diagnostics, a standardized system built into vehicles to monitor and report data from various vehicle subsystems. It allows mechanics and even car …

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.

Jul 19, 2025 · OBD stands for On-Board Diagnostics, a built-in computer system in vehicles that monitors engine performance, emissions, and other critical systems. It logs Diagnostic Trouble …

Jan 29, 2013 · What is a Diagnostic Trouble Code (DTC)? Diagnostic trouble codes (or fault codes) are obd2 codes that are stored by the on-board computer diagnostic system. These …