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Home >> Genesis >> 2019 >> G70 3.3T Dynamic, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Engine Control System Diagnosis - 2.0L (1 Of 4)) >> 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
Main Action
  • Monitoring the deviation of long term fuel trim
  1. Air leakage
  2. Improper fuel pressure
  3. PCV valve stuck
  4. Clogging of injector
Prerequisite condition
  • Engine Coolant Temperature (ECT) is higher than 73°C (163.4°F).
  • Long-term fuel trim at idle is active with conditions;
    • Engine speed is lower than 900 rpm.
    • Mass fuel flow is less than 0.032g/rev.
  • Long-term fuel trim at partial load is active with conditions;
    • Engine speed is between 1150 rpm and 4000 rpm.
    • Mass fuel flow is between 0.014g/rev and 0.066g/rev.
Threshold Value
  • Long term fuel trim value at idle is greater than or equal to 0.008g/rev. Or Long term fuel trim value at partial load is greater than or equal to 25%.
Diagnostic Time
  • 90 Seconds
Mil On Condition
  • 3rd Driving Cycle