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P0300 on the 2003 Mitsubishi Lancer

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0300
04130072004-08-23. Service bulletin. POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMING FOR DIAGNOSTIC TROUBLE CODE (DTC) P0300 RANDOM MISFIRE. *TT DRIVEABILITY CONCERNS. MITSUBISHI TECH TALK. *TT UPDATE. *TT

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.