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 …

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.

Find your OBD port. Works on most 1996 or newer OBD2 vehicles. Year. Make. Model. Submit . Services.

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 addressed and …

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.

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 owners to …

OBD (On-Board Diagnostics) is an electronic monitoring system used in modern vehicles to track performance, capture faults, and help mechanics identify problems.

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 …

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.