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Home >> Jeep >> 2004 >> Wrangler SE, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Powertrain Diagnostic Procedures >> DRIVEABILITY - Gas >> DTC P0300: Multiple Cylinder Mis-Fire, DTC P0301: Cylinder #1 Misfire, DTC P0302: Cylinder #2 Misfire, DTC P0303: Cylinder #3 Misfire, DTC P0304: Cylinder #4 Misfire, DTC P0305: Cylinder #5 Misfire, DTC P0306: Cylinder #6 Misfire >> Possible Causes

Possible Causes

  1. INTERMITTENT MISFIRE
  2. VISUAL INSPECTION
  3. IGNITION WIRE
  4. (F42) ASD RELAY OUTPUT CIRCUIT
  5. ENGINE MECHANICAL PROBLEM
  6. IGNITION COIL
  7. COIL CONTROL CIRCUIT
  8. SPARK PLUG
  9. CHECKING FUEL PRESSURE
  10. FUEL PUMP INLET STRAINER PLUGGED
  11. RESTRICTED FUEL SUPPLY LINE
  12. FUEL PUMP MODULE
  13. CHECKING FUEL LEAK DOWN
  14. FUEL INJECTOR
  15. INJECTOR CONTROL CIRCUIT
  16. PCM
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