DTC P0170 Fuel Trim (Bank 1): DTC Detecting Condition

DTC P0170 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	Monitoring deviation of lambda controller	Air leakage or restriction in intake or exhaust system Dirty engine oil or oil level too high Front HO2S or MAFS contamination Fuel system EVAP system Faulty sensor signals
Enable Conditions	Lambda control active Coolant temperature > 70°C (158°F) No relevant failure 10V < Battery voltage < 16V
Threshold Value	Lambda controller < -30% or > +50%
Diagnostic Time	30 seconds
MIL On Condition	2 Driving Cycles