DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION CHART

DTC detecting condition	Trouble area
DTC P2098 Post Catalyst Fuel Trim System Too Lean (Sensor-2, Bank-2): Correction index of A/F (bank-2) feedback estimated based on HO2S (bank-2) signal is higher than correction upper limit for more than 10 sec. (2 driving cycle detection logic) DTC P2099 Post Catalyst Fuel Trim System Too Rich (Sensor-2, Bank-2): Correction index of A/F (bank-2) feedback estimated based on HO2S (bank-2) signal is lower than correction lower limit for more than 10 sec. (2 driving cycle detection logic)	Vacuum leakage Exhaust gas leakage Fuel injector malfunction HO2S and its circuit A/F sensor and its circuit Intake & exhaust valve clearance Intake & exhaust valve Valve timing ECM

DTC detecting condition

Trouble area

DTC P2098 Post Catalyst Fuel Trim System Too Lean (Sensor-2, Bank-2):
Correction index of A/F (bank-2) feedback estimated based on HO2S (bank-2) signal is higher than correction upper limit for more than 10 sec. (2 driving cycle detection logic)
DTC P2099 Post Catalyst Fuel Trim System Too Rich (Sensor-2, Bank-2):
Correction index of A/F (bank-2) feedback estimated based on HO2S (bank-2) signal is lower than correction lower limit for more than 10 sec.
(2 driving cycle detection logic)

Vacuum leakage
Exhaust gas leakage
Fuel injector malfunction
HO2S and its circuit
A/F sensor and its circuit
Intake & exhaust valve clearance
Intake & exhaust valve
Valve timing
ECM