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Home >> Subaru >> 2012 >> Forester X, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0141 O2 Sensor Heater Circuit (Bank 1 Sensor 2) >> Diagnostic Method

Diagnostic Method

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Output terminal for heater characteristics failure detection Low

Time Needed for Diagnosis:  4 ms x 2500 time(s)

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

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Output terminal for heater characteristics failure detection High

Time Needed for Diagnosis:  4 ms x 2500 time(s)