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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine Control System Diagnosis - 2.0L (3 Of 3)) >> DTC P2191-00: System Too Lean At Higher Load (Multiple) (Bank 1) >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Item  Detecting Condition  Possible Cause 
Main Action
  • Monitoring deviation of long term fuel trim control in part load
  1. Air leakage in intake, exhaust or EVAP system
  2. Faulty PCV system
  3. Faulty sensor signals
  4. Fuel system
Prerequisite Condition
  • Engine coolant temperature is higher than 73° (163.4 °F).
  • Part Load Lambda adaptation active conditions:
    • Engine speed is between 1, 150 and 4, 000 RPM.
    • Mass Fuel Flow is between 0.010g/rev. and 0.066g/rev.
  • Estimated low fuel dilution in oil (only for too rich system)
Threshold Value
  • Long term partial load Fuel Trim reaches maximum limitation for 20 seconds or longer within 90 seconds. (Maximum limitation is 25 %).
Diagnostic Time
  • 90 Seconds
MIL-On Condition
  • 3rd Driving Cycle
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