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Home >> Subaru >> 2016 >> Forester 2.5i, Eng CD FB25BC, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Diagnostics) (H4DO) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2270 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 2) >> Diagnostic Method
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Diagnostic Method

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

Judgment Value 

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Output voltage of rear oxygen sensor < 0.55V

Time Needed for Diagnosis: 

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