DTC Detecting Condition and Trouble Area

DTC detecting condition	Trouble area
P2096: Post Catalyst Fuel Trim System Too Lean Average of short term fuel trim based on HO2S is lower than - 1.95% for 5 sec. (2 D/C detection logic)	Vacuum leakage Exhaust gas leakage Fuel injector malfunction HO2S and/or its circuit A/F sensor and/or its circuit Engine compression Valve clearance Intake and exhaust valve Valve timing ECM
P2097: Post Catalyst Fuel Trim System Too Rich Average of short term fuel trim based on HO2S is higher than 2.20% for 5 sec. (2 D/C detection logic)