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Home >> Jeep >> 2003 >> Wrangler Rubicon, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0300: Multiple Cylinder Misfire, 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 (4.0L) Or DTC P0306: Cylinder #6 Misfire (4.0L) >> Notes

DTC P0300: Multiple Cylinder Misfire, 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 (4.0L) Or DTC P0306: Cylinder #6 Misfire (4.0L): Notes

NOTE: All DTCs listed above are diagnosed using the same test. For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring diagram, see WIRING DIAGRAMS . In testing procedures, alpha/numeric character in parenthesis i.e. (K4) designates circuit. After each repair procedure has been completed, reconnect all components. Perform FUEL SYSTEM/MISFIRE MONITOR VERIFICATION TEST  under VERIFICATION TESTS to ensure system is functioning properly.