DTC P2271 O2 Sensor Signal Stuck Rich (Bank 1/Sensor 2): DTC Detecting Condition

DTC P2271 DETECTING CONDITION TABLE

Item	Detecting Condition	Detecting Condition
DTC Strategy	Plausibility check during shift of lambda setpoint to rich or lean	Poor connection or damaged harness Rear HO2S
Enable Conditions	No fuel cut-off No full load phase No fuel trim error detected Delay time to start diagnosis: 13 ~ 30 sec, depending on operation point 11V < Battery voltage < 16V No relevant failure
Threshold Value	Rear HO2S signal > 0.2 V when lambda set point = 1.15
Diagnostic Time	30 sec.
MIL On Condition	2 Driving Cycles