Integra GS-R Coupe L4-1797cc 1.8L DOHC (VTEC) MFI (1997)
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Oxygen Sensor: Description and Operation
Primary Heated Oxygen Sensor (HO2S) (Sensor I)
The Heated Oxygen Sensor (HO2S) detects the oxygen content in the exhaust gas and signals the ECM. In operation, the ECM 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 and the
sensor element is coated with a catalyst. The HO2S is installed in TWC housing.