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Home >> Subaru >> 2007 >> Outback i, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0031 Ho2S Heater Control Circuit Low (Bank 1 Sensor 1) >> Diagnostic Method >> Judgment Value
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Judgment Value

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
Output voltage level Low
Front oxygen (A/F) sensor heater control duty < 87.5%

Time Needed for Diagnosis:  1 second

Malfunction Indicator Light Illumination:  Illuminates as soon as a malfunction occurs.



MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
Output voltage level High