That's a good point which I forgot. The only thing I would add is that those dates are from when it *WILL* be compliant.

It can be that a car from before those dates *MAY* be compliant, particularly if it is sold in the States. Clearly the further you go back the less likely it is to be compliant, and the presence of that socket is not a guarantee. Even where it has that plug it may not be a standard it or function.

You'll need to check your specific car, but your chances aren't great. Not zero, but not great.

a year 2000 diesel volvo will most likley not be EOBD complient as diesels didn't become EOBD complient till 2003/4 so using an EOBD code reader will not work. Only petrols became complient arond 2000

To be precise vehicles intended for use in the UK had by law to be European On Board Diagnostics (EOBD) compliant on 1 January 2001 for petrol engine passenger cars and light vans, and 1 January 2004 for diesel engines. Some manufacturers however were compliant before this date, and EOBD scan tools will work on them. In the USA all cars and light vans with gasoline engines had to be OBD II compliant by 1 January 1996.

It should be remembered that EOBD applies to engine emission related data only, and and they do provide lots of very useful information. To expect your EOBD scanner to check for vehicle specific fault codes or to check ABS, HVAC or Airbag modules will only leave the user disappointed.