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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Control System (Diagnostics) (P2101 To U171F) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2270 O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 >> Diagnostic Method

Diagnostic Method

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

JUDGMENT VALUE SPECIFICATION

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

Time needed for diagnosis:  15000ms

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.

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