page_title: On-board diagnostics
section_title: Hand-held scan tools
hierarchical_section_title: On-board diagnostics / OBD Applications / Hand-held scan tools
caption_attribution_description: English: Multi-brand vehicle diagnostics system handheld Autoboss V-30 with adapters for DLCs of several vehicle manufacturers. Courtesy of http://www.OBD2-Shop.euDeutsch: Multimarken Fahrzeugdiagnosesystem Handheld Autoboss V-30 inkl. Adapter für DLCs verschiedener Fahrzeughersteller
context_page_description: On-board diagnostics is an automotive 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 sub-systems. 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 "idiot light" if a problem was detected but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized digital communications port to provide real-time data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow a person to rapidly identify and remedy malfunctions within the vehicle.
context_section_description: A range of rugged hand-held scan tools is available.
  Simple fault code readers/reset tools are mostly aimed at the consumer level.
  Professional hand-held scan tools may possess more advanced functions
  Access more advanced diagnostics
  Set manufacturer- or vehicle-specific ECU parameters
  Access and control other control units, such as air bag or ABS
  Real-time monitoring or graphing of engine parameters to facilitate diagnosis or tuning
caption: Multi-brand vehicle diagnostics system handheld Autoboss V-30 with adapters for connectors of several vehicle manufacturers.[21]
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