Where is the Oxygen sensor loc.ated in my 911 Porsche

[bigbrother]

Where is the Oxygen sensor located. i have tried looking for it but cant find.

[ronak]

exhaust manifold i think.

[Nehmaiz]

first of all which 911 model are we talking about?

usually, there are two for each catalytic converter. on a 911 there are 2 catalytic converters on each side.

so 4 O2 sensors in total.

the first O2 sensor is located before the catalytic converter, and the second after the converter. the results of air/fuel mixtures from both sensors are compared and used to regulate the fuel/air intake.