Accent GSI Coupe L4-1495cc 1.5L DOHC MFI (1998)
Oxygen Sensor: Description and Operation
HEATED OXYGEN SENSOR (HO2S) - II
The heated oxygen senor senses the oxygen concentration in the exhaust gas and, converts it into a voltage which is sent to the ECM. The heated
oxygen sensor outputs about 800mV when the air fuel ratio is richer than the theoretical ratio and outputs about 100mV when the ratio is leaner
(higher oxygen concentration in exhaust gas.) The ECM controls the fuel injection based on this signal so that the air fuel ratio is maintained at the
theoretical ratio. The oxygen sensor has a heater element which ensures the sensor performance during all driving condition.
