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Home >> Acura >> 2003 >> 3.2CL Base >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Primary Heated Oxygen Sensor (HO2S-1)
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Primary Heated Oxygen Sensor (HO2S-1)

Sensor measures oxygen content in exhaust gas before catalytic converter. PCM uses input from this sensor to control duration of fuel injection. On 3.5RL equipped with V6 engine, 2 primary oxygen sensors are used. See OXYGEN SENSOR HEATER  under EMISSION SYSTEMS.

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