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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 P2270 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 2) >> Execution Condition

Execution Condition

Secondary Parameters Execution condition
Battery voltage ≥10.9 V
Sub feedback In operation
Amount of intake air ≥10g/s (0.35oz/s)
Estimated temperature of the rear oxygen sensor element ≥500°C (932°F)
Enable conditions at interrupt control are as follows
Air fuel ratio reduced from target air fuel ratio
= Value of Map
Continuous time when rear oxygen sensor output voltage is less than 0.55V ≥5000ms(CVT model)
≥15000ms(MT model)

Map 

MAP SPECIFICATION

Output voltage of rear oxygen sensor V 0.000 V 0.150 V 0.200 V 0.400 V 0.600 V
Air fuel ratio reduced from target air fuel ratio % 0.150 V x 100 0.150 V x 100 0.400 V x 100 0.400 V x 100 0.400 V x 100