Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Subaru
>>
2018
>>
Forester 2.5i, Automatic CVT Trans
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System (Diagnostics) (P2101 To U171F) (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
Fuel cut elapsed time
=5000ms
Estimated temperature of the rear oxygen sensor element
= 500°C(932°F)