Put your foot on the clutch (or footrest for Auto) and check under the dash about halfway up your shin.
The 2003 Honda Civic OBD 2 port is behind center console
The 1997 Honda Civic OBD 2 port is on drivers side,connector faces down
The 2004 Honda Civic OBD 2 port is behind kick panel; above accelerator pedal
The 2001 Honda Civic OBD 2 port is on lower right edge of dash; behind console trim
The 1996 Honda Civic OBD 2 port is under dash on left side connector faces down
It is on the left hand side of the centre consol near the gas pedal. http://www.fixexpert.com/wiki/odb2.php?page=odb2&id=19768 http://www.fixexpert.com/obd2/data/honda/civic/2001.jpg If you wish to look up others OBDII port locations for other vehicles try the main link at: http://www.fixexpert.com/wiki/OBD-2+Location
The 1994 Honda Civic air conditioning low pressure port is located on top of the air conditioner compressor. The low pressure port will have a blue top.
The 1996 Honda Civic OBD 2 port is on driver side,connector faces down
Left of steering wheel up under dash. Could be above gas pedal but most are more to the left by kick-panel. Federal law mandates an OBDII port to be within 3 feet of steering wheel and require no tools to access.
The 2004 Honda Civic OBD 2 port is behind kick panel; above accelerator pedal
You can get a can at an auto port for $20.
The OBD port on a 2002 Honda Accord is located on the engine. There are other vehicles that have it on driver side of the dashboard.