The oil sending unit on a 96 Honda Civic is right above the oil filter. The oil filter is on the back side of the engine.
above the cataylic converter
If you open the hood of your Honda Civic, most likely you will locate the oxygen sensor (O2) mounted in the exhaust manifold, above the exhaust pipe flange. On some models the exact location might vary, but you can always find the sensor by following the exhaust manifold and pipe. Depending on the year model of your Honda Civic, you may find a Primary Oxygen Sensor (PHO2) right before the catalytic converter and a Secondary Oxygen Sensor (SHO2) right after the catalytic.
It is located directly above the transmission. There is a detachable wire harness.
The knock sensor is on the back of the block. If you're looking from under the car it's above the oil filter. It is between the oil filter and the intake manifold.
On automatics, it is located at the very top of the transmission towards the back above the area where the CV axles connect to the transmission
According to the Auto Car website, the most popular Honda Civic is the Honda Civic Type R Mugen. The Mugen is a sporty type of Honda Civic with tail wings above the trunk of the vehicle.
It's located right above the oil filter. It has two wires coming out of it with a black boot around it. Remove the oil filter to get to it easier.
The C115 connection is it supposed to connected because mine is not
I believe it is screwed to the engine block on the side facing the rear of the car just above the LH CV axle.
On a 1991 Honda Prelude 2.1SI, the Oil Sensor is located slightly above the Oil Filter.
The oild pressure sensor Is below the oil filter on the engine block. The knock sensor is above the oil filter. The vtec oil pressure sensor is on the block next to the distibutor. For a Vtec model and the 2.3 liter models(on the Si-Se models). On the 2.2 non-vtec(S model) I believe it is on the block above the oild filter