This article needs additional citations for. Unsourced material may be challenged and removed. Goroll Primary Care Medicine Pdf Download. (June 2009) () On-board diagnostics ( OBD) is an term referring to a vehicle's self-diagnostic and reporting capability. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle subsystems. Villiers Engine Serial Number. Albert Carr Is Business Bluffing Ethical Pdf Reader. The amount of diagnostic information available via OBD has varied widely since its introduction in the early 1980s versions of on-board vehicle computers. Early versions of OBD would simply illuminate a malfunction indicator light or ' if a problem was detected but would not provide any information as to the nature of the problem.