If your car was built after 2004, it is very likely to have full OBD-II compliance and you will enjoy the full functionality of VI. In vehicles built before 2004, compatibility gets a bit hit and miss, but here's a rough guide to help determine if your car is OBD-II compliant. If you are unsure whether your vehicle is OBD-II, please contact the vehicle manufacturer.

Age & Country of Origin

OBD-II compliance became mandatory for all cars and light trucks built and sold in the United States in 1996. In the UK, it's a bit more complicated.

  • OBD-II became mandatory for new car designs in 2000.
  • Models already in existence before 2000 were made compliant in vehicles BUILT after 2001.
  • All diesel vehicles were OBD-II from 2004

Connector Plug

Generally, the OBD plug will be located within 3ft of the driver and is usually hidden behind an easily removable panel. Connector PlugCommon locations for this plug is under the dash in either the driver or passenger foot well, behind the ashtray, near the internal fuse box, or in the back the glove box. Some vehicles also have diagnostics port in the engine bay but the OBD-II port should be in the passenger compartment close to the drivers position (as above).

On some OBD compliant vehicles, there will be a label or nameplate located inside the engine bay (sometimes part of your VIN plate).

Modified Engine Management Systems

Vehicles built before the adoption of OBD-II may in some cases power up but will not initiate the engine management data stream and will have limited functionality or will not work at all.

NOTE: If you have upgraded/replaced the factory fitted OBD-II compliant engine management system you should check with the supplier of your new system whether it is still OBD-II compliant before purchasing.