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Home >> Hyundai >> 2014 >> Equus Signature >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0300: Random/Multiple Cylinder Misfire Detected >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Engine roughness through crankshaft speed fluctuation
  1. Poor connection
  2. Ignition system
  3. Fuel system
  4. Intake/exhaust air system
  5. Ignition timing
  6. Injector
Enable Conditions
  • Engine speed is between 400rpm and 4520rpm
  • Engine load is higher than Zero torque line
  • Engine start
  • Fuel level is higher than 15%
Case1 Threshold Value
  • Misfire rate is greater than 3.25% pre 1000 revolutions
Mil On Condition
  • 2 driving cycle
Case2 Threshold Value
  • Rate of misfire per 200 revolutions is greater than 6.3~11.8% in driving condition
Mil On Condition
  • Immediately (Blink)
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