DTC P0140 Ho2S Circuit No: Activity Detected (Bank 1/Sensor 2): DTC Detecting Condition

DTC DETECTING CONDITION

Item		Detecting Condition & Fail Safe	Possible Cause
DTC Strategy		Sensor voltage excursion for Lean and Rich mixture	Related fuse blown or missing Contact resistance in connectors HO2S contamination
(Case1)	Enable Conditions	Sensor preheating and full heating phases finished Full Phase finished Integrated MAF in Fuel cut-Off > 18g Integrated MAF after Fuel cut-Off > 40g
	Threshold Value	Signal increase < 30mV
	Diagnostic Time	0.3 sec.
(Case2)	Enable Conditions	Sensor preheating and full heating phases finished Fuel cut-off phase Integrated MAF after starting fuel cut-off > 20g
	Threshold Value	Voltage with fuel cut off > 0.2V
	Diagnostic Time	5 sec.
MIL On Condition		2 Driving Cycles