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Home >> Subaru >> 2015 >> XV Crosstrek Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnostic Trouble Code (DTC) Detecting Criteria (Except Hybrid) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2271: O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2) >> Diagnostic Method

Diagnostic Method

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

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Output voltage of rear oxygen sensor > 0.15 V

Time Needed for Diagnosis:  500 ms

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

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