DTC P2231: Ho2S Signal Circuit Shorted To Heater Circuit (Bank1, Sensor1): DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	Possible Cause
DTC Strategy	Front HO2S signal monitoring.	Contact resistance in connectors Interference in HO2S
Enable Conditions	Lambda closed loop control active Stable driving condition Exhaust temperature mode > 400°C(752°F) No relevant failure 11V < Battery voltage < 16V
Threshold Value	More than 50 heater coupling detected during 100cycles of heating frequency
Diagnostic Time	10 sec.