DTC P2A00 O2 Sensor Not Ready (Bank 1 / Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Detects Loss of O2 Ready status, which would lead to Open Loop Fueling operation, a default mode.	Poor Connection Faulty HO2S Faulty PCM
Enable Conditions	Engine Running Ignition ON DFCO Not present too long ≤ 15sec. No Disabling Faults Present All of the above for minimum time ≥ 20sec.
Threshold value	O2 Ready Status lost
Diagnosis Time	Continuous (More than 10 second failure for every 12 second test.)
MIL On Condition	1 Driving Cycles