DTC P2196 Ho2S Signal Stuck Rich (Bank 1/Sensor 1): DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	Possible cause
DTC Strategy	Determines if O2 sensor indicates rich exhaust while in decel fuel cut-off	Poor Connection Faulty HO2S Faulty PCM
Enable Conditions	Sensor not in cooled status Not in Transient Conditions status Airflow present ≥ 2 g/s Ignition voltage ≥ 10V Fuel reduction not active Engine running Engine running long enough ≥ 60sec. Deceleration fuel cut off conditions present Engine coolant warm enough ≥ 60°C (140°F) Above conditions met long enough ≥ 1.5sec.
Threshold value	O2 sensor voltage > 0.2V
Diagnosis Time	Continuous (More than 11.25sec. failure for every 12.5sec. Test)
MIL On Condition	2 Driving Cycles