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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) >> Diagnostic Method >> Normality Judgement

Normality Judgement

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  1. Judge Normal when the response time (diagnostic value) is smaller than threshold (judgment value) when changing to lean since O2 sensor voltage.
  2. A normal judging is not carried out.


  1. Judge Normal when the response time (diagnostic value) is smaller when changing to lean since O2 sensor voltage.

    Response Time (diagnosis value) </= Threshold value --> Normal

  2. A normal judging is not carried out.
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