P0134 O2 Sensor Circuit No Activity Detected (Bank 1/Sensor 1): DTC Detecting Condition

Item		Detecting Condition	Possible Cause
DTC Strategy	Case 1)	Signal plausibility during fuel cut off	Related fuse blown or missing Contact resistance in connectors HO2S contamination
DTC Strategy	Case2)	Signal stroke plausibility
Enable Conditions	Case1)	O2 sensor operative readiness Sensor preheating and full heating phases finished Fuel Cut Off active Integrated Mass Air Flow > 16g Fuel Cut Off phase No relevant failure Battery voltage > 10V
Enable Conditions	Case2)	Sensor preheating and full heating phases finished Signal stroke valid (5 P-jump after Lambda regulation activation) Lambda controller is not on the limit Lean/rich cycle time < 2.5 sec. No relevant failure Battery voltage > 10V
Threshold Value	Case1)	Voltage with fuel cut off > 0.1V
Threshold Value	Case2)	Sensor voltage < 0.25V
Diagnostic Time	Case1)	5 Sec.
Diagnostic Time	Case2)	2 min.
Mil On Condition		2 Driving Cycles