Mike's Workshop Manuals
: Service manuals for every vehicle
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 P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2)
>>
Execution Condition
Execution Condition
Secondary Parameters
Execution condition
Battery voltage
≥10.9 V
Deceleration fuel cut for 5000ms or more.
Experienced
Estimated temperature of the rear oxygen sensor element
≥500°C (932°F)