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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Engine Control System Diagnosis - 2.0L (2 Of 3)) >> DTC P0300-00: Random/Multiple Cylinder Misfire Detected >> 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
  • Calculation of engine roughness
  1. Faulty spark plugs or Ignition coil
  2. Incorrect valve timing
  3. Uneven compression
  4. Air leakage
  5. Improper Fuel pressure or dirty fuel.
  6. Blocked/Leaking injectors
  7. Leakage between cooling system and cylinder
Prerequisite Condition
  • Engine load ratio is between 10% and 85%.
  • Engine speed (RPM) is between 470 and 6700 RPM.
  • Ambient pressure (model) is greater than 75kPa.
  • The gradient of engine load ratio is between 12%/s and 60%/s.
  • Engine coolant temperature is higher than 20° (68°F) if start temperature of engine is lower than -7° (19°F).
  • Battery voltage is between 11V and 16V.
  • Fuel cut-off is not functioning.
  • Mean value of wheel speed signal gradient is higher than 13% through 25%.
Threshold Value
  • Misfire detected on 2 or more cylinders
Diagnostic Time
  • Continuously
MIL-On Condition
  • 3rd Driving Cycle
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