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Home >> Subaru >> 2007 >> B9 Tribeca Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0037 Ho2S Heater Control Circuit Low (Bank 1 Sensor 2) >> Diagnostic Method >> Abnormality Judgment
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Abnormality Judgment

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

Judgment Value 

MALFUNCTION CRITERIA AND THRESHOLD VALUE REFERENCE

Malfunction Criteria Threshold Value
Output voltage level Low
Rear 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.