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GD(H4SO)-14 Diagnostic Trouble Code (DTC) Detecting Criteria GENERAL DESCRIPTION 5. DIAGNOSTIC METHOD • Abnormality Judgement If the duration of time while the following conditions are met is longer than the time indicated, judge as NG. Time Needed for Diagnosis:4 ms × 250 time(s) • Normality Judgement Judge as OK and clear the NG if the continuous time while the following conditions are established is more Time Needed for Diagnosis: Less than 1 second Judgement Value Malfunction Criteria Threshold Value Output voltage level Low Front oxygen (A/F) sensor heater control < 87.5 % Judgement Value Malfunction Criteria Threshold Value Output voltage level High |