Want this question answered?
Try to picture this Bank 1 Sensor 1 Bank 2 Sensor 1 Catalytic Conv. Catalytic Conv. Bank 1 Sensor 2 Bank 2 Sensor 2
The HO2S (Heated Oxygen Sensor) bank 1 is between the manifolds and the Cadillac Converter. Manifold Exhaust (T) > "HO2S Sensor" > Cadillac Converter > muffler
o2 sensor is on driver side 2nd one back
Trouble code P0140means:O2 sensor ciruit-no activity detected (bank 1 sensor 2)
02 oxygen sensor circuit malfuction bank 1 sensor 1
bank 2 sensor 2 location
Just in front of the Cat converter, drivers side.
Bank 1 (cyl. 1-3-5 passenger side) Sensor 1 (first sensor from engine) is accessible from under car. It is located just before the catalytic converter.
Facing the car it is on the passenger side under the car after the cataylic converter
Bank 1 refers to the side of the car with the number 1 cylinder, on your vehicle it is the rear side of the engine. Sensor 2 is the second sensor, the one after the catalytic convertor, in the exhaust pipe coming from the engine.
it's in the exhaust manifold
on the cat by the downpip