Ok my o2 sensor fuse keeps blowing I understand it might be a short.i disconnected all 3 o2 sensors and it still blows the fuse & everything looks good in the harness on top & bottom of the car . Does any one know if that fuse powers somthing else. So I can look in to it any suggestion will help.

 

O2 sensors don't have fuses... Well at least on my car they don't.

 

All thre O2 sensors on our cars (yours too) share a fuse for the heating circuit. Although I don't know why it would be short circuiting.

 

I wonder if there is a relay that goes to it

 

Oh. Another genius idea we can thank Nissan for