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Home >> Kia >> 2020 >> Soul GT Line Turbo >> Repair and Diagnosis >> External Pages >> Different car >> Section 81 (Engine Control System Diagnosis - 1.6L (2 Of 6)) >> DTC P0171-00: System Too Lean (Bank 1) >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy Case1
  • Multiplicative long term fuel trim upper limit reached
  • Poor connector connection
  • Air leakage or restriction in intake or exhaust system
  • Dirty engine oil or oil level too high
  • Faulty PCV
  • Faulty injector
  • Faulty fuel system
  • Faulty sensor signals
Case2
  • Additive long term fuel trim upper limit reached
Enable Conditions Case1
  • long term fuel trim active conditions (multiplicative)
    • Torque is between 17% and 57%
    • Fuel system status is closed loop
    • ECT higher than 65°C
    • IAT less than 85°C (185°F)
    • Canister purge control is off
Case2
  • long term fuel trim active conditions (additive)
    • Engine speed less than 1000 RPM
    • Torque is between 5.8% and 30%
    • Fuel system status is closed loop
    • ECT higher than 65°C
    • IAT less than 85°C (185°F)
    • Canister purge control is off
Threshold Value Case1
  • long term fuel trim active conditions (multiplicative)
    • long term fuel trim more than or equal to 25%
Case2
  • long term fuel trim active conditions (additive)
    • long term fuel trim more than or equal to 7%
Diagnostic Time Case1
  • 30s
Case2
  • 25s
MIL ON Condition
  • 2 driving cycles