02 sensor

I'm a 1997 Buick I believe they have more then on o2 sensor so if one is bad an you replace the wrong one itll still say the o2 is bad until you replace the right one but you can have up to 3 o2 sensors or more o2 sensors an all so some codes will tell you which one it is like B1 or S2 I don't know if this helps you or not but you can check to see how much o2 sensors you have on that year an make you can call AutoZone or O'Reilly's they should be able to tell you

No fuses.