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Home >> Subaru >> 2006 >> Outback R >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0037 Ho2S Heater Control Circuit Low (Bank 1 Sensor 2) >> Diagnostic Method

Diagnostic Method

Abnormality Judgment 

Judge as NG when the continuous time while meeting all of the malfunction criteria below is more than 2560 milliseconds (10 cycles).

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Output voltage Low
Oxygen sensor heater control duty < 75%

Time Needed for Diagnosis:  2.56 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment 

Judge as OK and clear the NG when the malfunction criteria below are completed.

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Output voltage High