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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2050 (Engine Controls - Diagnostic Subroutines - 6.4L 99R Diesel -- F250-F550 Super Duty) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> P0300 - Random Misfire Detected

P0300 - Random Misfire Detected

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P0300 - RANDOM MISFIRE DETECTED

Description:  The powertrain control module (PCM) continuously monitors all cylinders for a misfire. When the PCM detects a full loss of combustion for a calibrated amount of time in more than 1 cylinder this DTC is set.
Possible Causes: 
  • Fuel concern
  • High pressure fuel injection pump concern
  • Base engine
  • Fuel injectors
Diagnostic Aids:  Access the PCM and record the freeze frame data. The misfire freeze frame data may be used to determine the operating conditions when the misfire DTC was set.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   - - refer to PINPOINT TEST AR .