DTC P2097 Post Catalyst Fuel Trim System Too Rich (Bank 1): DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item		Detecting Condition	Possible Cause
Case 1	DTC Strategy	Monitoring deviation of fuel trim control (Long term)	Three Way Catalytic Converter (TWC) Rear HO2S
	Enable Conditions	No relevant failure Long term fuel trim active
	Threshold Value	Trim value at Limits (-0.028 / 0.028) more than 60 sec.
	Diagnostic Time	60 sec.
Case 2	DTC Strategy	Monitoring deviation of fuel trim control (Short term)
	Enable Conditions	No relevant failure Short term fuel trim active Current engine speed - Mean of engine speed < 500 RPM Current mass air flow - Mean of mass air flow < 400 mg/rev Current lambda correction mean value - Mean of lambda correction mean value < 4%
	Threshold Value	Deviation at Limits (-0.26 / 0.60) more than 10 ~ 30 sec.
	Diagnostic Time	30 sec.
Mil On Condition		2 Driving Cycles