What could cause my oxygen sensor sensor fuse to keep blowing? The rear sensor was replaced about 8,0000 miles ago, and the front 2 were replaced around 3,000 miles ago. I have read about shorts in the wiring, could this be it? BTW I am running 50 shot, don't spray that much, cat back and intake. Only used Bosch sensors to replace with. Thanks.

 

Usually it is a short, especially if you've had exhaust work done where it moves the position of the rear O2 sensor... It usually is close to the heat shield anyways and when it moves around.. it exposes bare wire if it's too close to the heat shield.