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Home >> Subaru >> 2004 >> Baja Base, 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
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Diagnostic Method

Judge NG when the continuous time of completing all the malfunction criteria below becomes more then 4.5 seconds.

Judgment Value 

Fig 1: Threshold Value Table
G00898524Courtesy of SUBARU OF AMERICA, INC.
  1. Time Needed for Diagnosis: 

    10 seconds

  2. Malfunction Indicator Light Illumination: 

    Illuminates as soon as malfunction occurs.