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 detect failures that may increase the vehicle tailpipe emissions to more than 150% of the standard to which it was originally certified [1][2]
What is OBD? Understanding On-Board Diagnostics | Noregon 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 fixed before an inspection
What is OBD? Understanding On-Board Diagnostics System 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 diagnose and address issues through OBD2 scanning systems