DTC P2096-00: Post Catalyst Fuel Trim System Too Lean Bank 1; DTC P2097-00: Post Catalyst Fuel Trim System Too Rich Bank 1 [07/2015 - 08/2019]: Contents

DTC No.	Detection Item	DTC Detection Condition	Warning Indicate	Memory	Fail-safe Operation	Note
P2096-00	Post Catalyst Fuel Trim System Too Lean Bank 1	HO2S fuel injection control system: air fuel too lean	Check engine light: ON Master warning light: OFF Charging system warning light: OFF Engine oil warning light: OFF Wrench warning indicator light: OFF	DTC stored	Not applicable	Drive cycle: 2 Monitor item: Fuel system Self test type: CMDTC self test
P2097-00	Post Catalyst Fuel Trim System Too Rich Bank 1	HO2S fuel injection control system: air fuel too rich	Check engine light: ON Master warning light: OFF Charging system warning light: OFF Engine oil warning light: OFF Wrench warning indicator light: OFF	DTC stored	Not applicable	Drive cycle: 2 Monitor item: Fuel system Self test type: CMDTC self test

DETAILS ON DTCS

DTC DETECTION CONDITION	HO2S fuel injection control system: P2096-00: Air fuel too lean P2097-00: Air fuel too rich
	Determination conditions	P2096-00: Depending on the correction deviation of the A/F sensor, a condition in which the fuel feedback correction amount (Short Term Fuel Trim (Bank 1, Sensor 2)) for the HO2S is the specified value (2 %) or more and the sum (Short Term Fuel Trim (Bank 1, Sensor 2)+Long Term Fuel Trim (Bank 1, Sensor 2)) of the fuel feedback correction amount and the fuel learning correction amount is the specified value (2.3 - 2.5 %) or more continues for a period of 25 s.
	Determination conditions	P2097-00: Depending on the correction deviation of the A/F sensor, a condition in which the fuel feedback correction amount (Short Term Fuel Trim (Bank 1, Sensor 2)) for the HO2S is the specified value (-2 %) or less and the sum (Short Term Fuel Trim (Bank 1, Sensor 2)+Long Term Fuel Trim (Bank 1, Sensor 2)) of the fuel feedback correction amount and the fuel learning correction amount is the specified value (-2.5 - -2.3 %) or less continues for a period of 25 s.
	Preconditions	HO2S estimated temperature: above 450 °C {842 °F}
	Malfunction determination period	25 s period
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	HO2S
FAIL-SAFE OPERATION	Not applicable
VEHICLE STATUS WHEN DTCs ARE OUTPUT	Illuminates check engine light.
TROUBLE AREA	Erratic signal to ECM ECT sensor signal malfunction MAF sensor signal malfunction MAP sensor signal malfunction IAT sensor No. 2 signal malfunction Related connector or terminals malfunction Related wiring harness malfunction Improper operation of hydraulic variable valve timing control system Air suction in intake air system Poor fuel quality HO2S malfunction HO2S loose A/F sensor malfunction A/F sensor loose Exhaust system leakage A/F sensor deterioration Fuel injector malfunction Improper operation of fuel injector Fuel injector related wiring harness malfunction Improper operation of purge control system Purge VSV malfunction Purge solenoid hoses improper connection Fuel leakage or restriction in fuel line MAP sensor malfunction MAF sensor malfunction Air cleaner element restricted ECM malfunction