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Home >> Hyundai >> 2011 >> Equus Ultimate >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0300: Random/Multiple Cylinder Misfire Detected >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

DTC DETECTING CONDITION REFERENCE CHART

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 340 ~ 6480rpm
  • Engine load > Zero torque line
  • Time after engine start > 0 sec
  • Intake air temperature > -30°C
  • Wheel acceleration < 18~28 m/sec2
Case 1 Threshold Value
  • Misfire rate > 3.25%
Diagnostic Time
  • 1000 rev
MIL ON Condition
  • 2 driving cycle
Case 2 Threshold Value
  • Misfire rate > 5.6~11.8%
Diagnostic Time
  • 200 rev
MIL ON Condition
  • Immediately (Blink)
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