![]() Early versions of OBD would simply illuminate a malfunction indicator light or " idiot light" if a problem was detected but would not provide any information as to the nature of the problem. ![]() ![]() The amount of diagnostic information available via OBD has varied widely since its introduction in the early 1980s versions of on-board vehicle computers. OBD systems give the vehicle owner or repair technician access to the status of the various vehicle sub-systems. ![]() On-board diagnostics ( OBD) is an automotive term referring to a vehicle's self-diagnostic and reporting capability. Used to connect to the SAE J1962 Data Link Connector (DLC) found in many cars of the era. ![]() Various angles and details of a "MaxScan OE509" - a fairly typical onboard diagnostics (OBD) handheld scanner from the first decade of the 21st century. ![]()
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