Does an O2 Sensor malfunction cause the engine to run rough?
Where is the Upstream Oxygen Sensor Located?
Where can I buy an O2 sensor?
I got a P0130 error code what does it mean?

 

no such error code as 0130

 

I'm about 10 HP lower than I ought to be, my mileage is just a little less than it use to be. I'm getting no engine codes or anything. But I had the Nissan Consult scan tool hooked up and drove for 2 miles. The codes for the O2 sensor came on sparatically. I'm going to changing all three of them.

 

my friend, who is a mechanic, says that if O2 sensors go, the ECU gets no reading on the oxygen in the exhaust (or whatever), and by this happening, it just dumps more fuel into the cylinder...therefor, killing your gas mileage..

and yes, i just had this problem yesterday and got it fixed, it does make the engine feel like it's rough..

get it checked out.. it will be better......