We had a head issue an replace the head on an '02 sportage, as well as the exhaust manifold (very cracked). After the rebuild we got a O2 sensor failure (bank 1, exhaust), which we blindly replaced. The ECU reader showed no voltage on the sensor so we discovered the O2 sensor fuse, which was blown. Doh! We replaced that and still no voltages on the O2 sensor from the ECU. Not sure where to go from here. Does anyone know what we should be reading on the O2 sensor socket (schematic, voltages, etc.). Thanks!