I have a S60 and engine light came on and It said 02 Sensors I purchased 2 new after market ones and soilder the connections and same code came back up. I checked the volatge and with the key off 9.32 volts Key on 8.89 volts checked the fuse and I have 11.75 volts at fuse is this normal? Any help would be appreciated. Need to fix it so I can smog it.