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Home >> Subaru >> 2016 >> Forester 2.5i, Eng CD FB25BA, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Diagnostics) (H4DO) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0141 O2 Sensor Heater Circuit (Bank1 Sensor2) >> Diagnostic Method

Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGEMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Rear oxygen sensor heater current ≤ Battery voltage x 0.88 V

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

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

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