Both oxygen sensors are in the exhaust pipe, one under the front of the engine, one roughly under the passenger seat are.
O2 sensors are always located on the exhaust system.
There are two.
There are two.
Your Villager has only one O2 sensor located on the front catalytic pipe before the converter. You should be able to look down between the engine and radiator and see it.
The oxygen sensors are in the exhaust pipes on most models.
The heater in the oxygen sensor has failed. Its a good idea to replace BOTH oxygen sensors at the same time. If one has failed the other won't be lasting very long.
left side of the engine after the cat
The screw into the exhaust pipes. One will be near the front under the front of the engine, one will be after the second converter roughly under the passenger seat.
There are two oxygen sensors, one in the exhaust near the engine, one in the exhaust pipe after the second converter, roughly under the passenger seat on OBD-II vehicles.
There are two, on in front of the converters near the engine, and one after the converters, roughly under the passenger seat.
I wasn't aware that there was a middle oxygen sensor. I have a 1997 Villager that was vandalized and the catalytic converter and O2 sensors were stolen. From what my mechanic tells me and Auto Zone there are only 2 sensors, one in front of the catalytic converter and one behind it.
There are two, one is in the exhaust near the front of the engine, the other is in the exhaust pipe under the passenger seat area.