Service engine soon light came on. AutoZone readout provided code P0141, Generic Definition. HO2S 12 Heater condition (Heated Oxygen Sensor Bank 1 Sensor 2) -The powertrain control module monitors the oxygen sensor heater.The computer has recognized a failure in this circuit.Probable causes:
1.Oxygen sensor defective.
2.Poor connection at oxygen sensor.
3.Check circuit fuse.
Can you tell me where this circuit-fuse is located??
Can you tell me where the Sensor is located?

Thanks in advance