Civic Coupe L4-1595cc 1.6L DOHC (VTEC) MFI (1999)
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Oxygen Sensor: Description and Operation
OPERATION
The Heated Oxygen Sensor (HO2S) detects the oxygen content in the exhaust gas and signals the ECM/PCM. In operation, the ECM/PCM
receives the signals from the sensor and varies the duration during which fuel is injected. To stabilize the sensor's output, the sensor has an internal
heater. The Primary HO2S (Sensor 1) is installed in the exhaust manifold.
