what country are you in, there is no world standard , so with out this data, your question is impossible to answer.
if usa and canada , the connector by law must be within 1 meter from center of steering wheel.
if out side , usa/can, you can can be year 2000 and still not have obd2 (or the equiv)
2003 diesel can be non OBD2 in EU.
here is a quote
OBD2 standard
OBD2 (or OBDII) defines a communications protocol and a standard connecter to acquire data from passenger cars. It was required by U.S. EPA on all gasoline powered cars and light duty trucks manufactured for the U.S. after 1996 to help monitor/inspect vehicle emissions. Canada required it after 1998, and a European standard (EOBD) is also enforced.
if you are in usa and canada the connector
is usually located in these areas , drivers seat.
1: in plain view, bottom edge of dash , looking up.
2: behind a plasic flip off panel near steering column
3: behind ashtray door.
4: behind fuse panel all above very close to steering column.
but mine, is moved to the passener side.