Editing On-board diagnostics (section)

=== Hand-held scan tools ===
[[File:Autoboss v-30.png|thumb|Multi-brand vehicle diagnostics system handheld Autoboss V-30 with adapters for connectors of several vehicle manufacturers.<ref>{{cite web|title=Autoboss 30 Diagnostic Coverage List|url=http://autobossuk.co.uk/uploads/documents/53.pdf}}</ref>]]

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