Question

Where is the fuse for the H2OS located on a 2005 Mazda RX-8? Also, if Im reading other threds correctly about this being hooked to the B+ ignition and coil circuit, wouldn't this fuse being blown prevent car for even starting (ie no power to the coils?)

also, was wondering if a bad cat could cause the code to be thrown since all I read says the second o2 sensor doesn't affect engine running, strictly for emissions. And I seem to have something robbing power from my car after its hot and running. have already changed 4 coils, plugs and wires.

Any help would be appreciated.

Answer 1

there is no fuse for the oxygen sensor. here are the diagnostic procedures