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Home >> Hyundai >> 2021 >> Elantra N Line, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Engine Control System Diagnosis - 2.0L (Except HEV) (3 Of 6)) >> DTC P0301-00: Cylinder 1-Misfire Detected >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • Misfire rate calculation
  1. Poor connector connection
  2. Faulty spark plugs
  3. Faulty spark plug cables
  4. Air leakage
  5. Belt deflection and air gap of CKPS
  6. Incorrect timing
  7. Faulty injector
  8. Improper fuel pressure
  9. Improper engine compression
Enable Condition
  • Engine load ratio between 14 and 64%
  • Engine speed between 500 and 6700 RPM
  • MAFS gradient/s between 12 and 60%
  • Throttle gradient/s between 58.6 and 1265.6%
  • ECTS is more than 68°F (20°C) if start temperature is less than 19.4°F (-7°C)
  • No relevant failure
  • Fuel cut-off not active
  • Battery voltage between 11 and 16V
Threshold Value Case 1
  • Misfire ratio between 10 and 50% within 200 revolution
Case 2
  • Misfire ratio is equal 2.0% within 1, 000 revolution.
Diagnostic Time Case 1
  • 200 revolution
Case 2
  • 1, 000 revolution
MIL ON Condition Case 1
  • Immediately
Case 2
  • 2 driving cycles