OBD

Transportation & Travel abbreviation · Automotive

OBD
Stands forOn-board diagnostics
CategoriesTransportation & Travel

OBD stands for On-board diagnostics, an automotive abbreviation.

Vehicle self-diagnostic system that monitors engine and emissions components and stores fault codes, which mechanics read with a scan tool. California required early forms on new cars from the late 1980s.

Example: Plug a cheap OBD reader into the port under the dash and it will tell you why the light is on.

Usage notes

First-generation systems (OBD-I) varied by manufacturer and were limited. The standardized second generation, OBD-II, became mandatory in the US for 1996 models. In Europe the equivalent is EOBD. Insurance telematics dongles and some fleet trackers plug into the OBD port.

More automotive abbreviations

  • MPI – Multipoint injection
  • MPV – Multi-purpose vehicle
  • MSRP – Manufacturer's suggested retail price
  • MT – Manual transmission
  • NACS – North American Charging Standard
  • NCAP – New Car Assessment Program
  • OBD-II – On-board diagnostics II
  • OEM – Original equipment manufacturer
  • OHV – Off-highway vehicle
  • OTA – Over-the-air updates
  • OTD – Out-the-door price
  • PCM – Powertrain control module

See all 116 automotive abbreviations →