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Home >> Hyundai >> 2007 >> Accent GS, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G4ED-GSL 1.6) >> Gasoline Engine Control System >> OBD-II Review >> 3. OBD-II System Readiness Tests >> 1) Catalyst Monitoring

1) Catalyst Monitoring

The catalyst efficiency monitor is a self-test strategy within the ECM/PCM that uses the downstream Heated Oxygen Sensor (HO2S) to determine when a catalyst has fallen below the minimum level of effectiveness in its ability to control exhaust emission.

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