Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)
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Heated Oxygen Sensor: Description and Operation
Front Heated Oxygen Sensor
COMPONENT DESCRIPTION
The front heated oxygen sensor (right bank) is placed into the exhaust manifold (right bank). It detects the amount of oxygen in the exhaust gas
compared to the outside air. The front heated oxygen sensor (right bank) has a closed-end tube made of ceramic zirconia. The zirconia generates
voltage from approximately 1V in richer conditions to 0V in leaner conditions. The front heated oxygen sensor (right bank) signal is sent to the
ECM. The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from
1V to 0V.
