DTC P0174 System Too Lean (Bank 2): DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	Possible cause
DTC Strategy	Monitor the fuel trim value	Air leakage Improper fuel pressure PCV valve stuck Clogging of injector
Enable Conditions	Engine warm-up sufficiently Drive at a steady speed over 5 minutes ( Vehicle speed ≤ 130km/h) 60°C (140°F) ≤ Engine coolant temperature ≤ 115°C (239°F) No disabling faults (DTCs related to HO2S, purge valve, catalyst)
Threshold value	Average of short term fuel trim > 0.8 and Average of long term fuel trim > 1.2
Diagnosis Time	Continuous
MIL On Condition	2 Driving Cycles