Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Subaru
>>
2018
>>
Impreza Base, 4D Sedan, Standard Trans
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System (Diagnostics) (P2101 To U171F)
>>
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 or more
Fuel cut duration
5000ms or more
Estimated temperature of the rear oxygen sensor element
500°C (932°F) or more