Yes it will.
If it is malfunctioning it can affect fuel mileage.
causes very poor gas mileage
Absolutely. Not just on Subaru but every car built that has an oxygen sensor. And they all do.
the 02 sensor has nothing to do with gas mileage. it sipley is a sensor that reads the oxygen level in your exhaust for emissions.
If someone could please explain who to get to the oxygen sensor and explain where it is for sure?
its screwed into your exhaust manifold.
A bad O2 sensor can affect gas mileage. It is an emissions sensor, so when it goes bad, it does not reflect emissions performance on the car, which could cost a lot in gasoline.
any of the oxygen sensors could affect gas mileage but usually the first one in the exhaust pipe on either side causes the most driveabilty issues.
yes
If the Nissan truck is either a V6 or a V8, the oxygen sensor will be located in the manifold. Sometimes it will be placed just below the manifold.
install a new one!!
extended pickup