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Home >> Kia >> 2011 >> Soul Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) - 1.6L >> DTC P0171: System Too Lean (Bank 1) >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • Long-term fuel trim limit (an excessive fuel supply)
  • Poor connection
  • Related sensor
  • Intake air system
  • Fuel pressure
General Enable Conditions
  • Coolant temperature > 70°C
  • Intake air temperature < 80°C
  • Throttle angle < 60%
  • Lambda feed back control condition
  • Canister purge control: OFF
  • No error on the related sensors (CKPS, TPS, ECTS, ATS, etc)
Case 1 Enable Conditions
  • Engine load: 30~75 %
  • Air mass: 40~190 kg/h
Threshold Value
  • Multiplicative adapting value > 1.23
Diagnostic Time
  • 30 sec
Case 2 Enable Conditions
  • Engine speed ≤ 920 RPM
  • Air mass ≤ 24 kg/h
Threshold Value
  • Additive adapting value > 8.5 %
Diagnostic Time
  • 20 sec
MIL ON Condition
  • 2 driving cycle
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