HO2S Bank 1 and Bank 2 Sensor 1

The scan tool displays a range of 0-1,000 mV. The HO2S Bank 1 and Bank 2 Sensor 1 parameter represents the fuel control exhaust oxygen sensor output voltage. The voltage fluctuates constantly within a range between 10 mV (lean exhaust) and 1,000 mV (rich exhaust) while operating in Closed Loop.