Definition for: OBD

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OBD is a generic term for On-Board Diagnostics. A distinction is drawn between OBD, OBD II, and EOBD (European OBD). OBD is a "function" of the vehicle. It monitors the vehicle's emissions-related components in order to meet legislated restrictions for the lifeĀ­ cycle of the vehicle. OBD is not limited to exhaust relevant components; it contains other functions such as gas tank leakage tests.

Source Christoph Marscholik and Peter Subke (2008) - Road vehicles, Diagnostic communication - automotive.softing.com