Yes
yes
Check out the website www.obd-codes.com (for 1996 and newer OBD II)
Do a google search for ( Ford OBD 1 codes ) to see a list
The 1996 Ford Explorer is definitely OBD II / EEC V , my late 1995 Ford Explorer has both the EEC TEST connection in the engine compartment for OBD I / EEC IV but it also has the Data Link Connector ( DLC ) under the steering wheel for the newer system which has confused some of the newer technicians ( and myself )
A 1996 Ford Explorer should be OBD II / EEC V with a data link connector in the lower part of the dash , below the steering wheel , between the inside hood release and the parking brake release and behind a small removable plastic panel ( if there was an " EEC TEST " connection it would be beside the Power Distribution Box on the drivers side of the engine compartment )
The OBD-II connector on the 2006 Ford Explorer is located above and in front of the parking brake release, behind the dash trim.
Obd - 1
yes
A 1994 Ford Explorer is OBD - I / EEC -IV , there is an EEC TEST connection in your engine compartment by your power distribution box
OBD = On Board Diagnostics.
I drive a 1995 Ford Explorer and as far as I know it doesn't have a knock sensor My Haynes repair manual engine wiring schematic shows a knock sensor on the 1996 Ford Explorer - OBD II / EEC V system
I believe OBD/2 diagnostics were implemented for most autos in the 1996 model year.