OBD-II

Transportation & Travel abbreviation · Automotive

OBD-II
Stands forOn-board diagnostics II
CategoriesTransportation & Travel

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

Standardized diagnostic system required on all cars and light trucks sold in the US since the 1996 model year, with a 16-pin connector usually under the dashboard near the steering column. It reports standardized fault codes that any generic scan tool can read.

Example: Emissions inspection here is just an OBD-II plug-in; they don't even look at the tailpipe anymore.

Usage notes

Also written OBD2 or OBDII. The connector and codes follow SAE standards, so a $20 reader works on almost any post-1996 car. Many US states run emissions tests through the OBD-II port instead of tailpipe sniffers. Europe introduced the similar EOBD for gasoline cars in 2001 and diesels in 2004.

More automotive abbreviations

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

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