Crown Victoria V8-281 4.6L SFI (1998)
Oxygen Sensor: Description and Operation
The Heated Oxygen Sensors (HO2S) are located in the dual converter Y pipe below the exhaust manifolds and below the catalytic converters.
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The heated oxygen sensors react with the oxygen in the exhaust gases and generate a voltage based on this reaction.
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A low voltage indicates too much oxygen or a lean condition.
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A high voltage indicates not enough oxygen or a rich condition.
