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P0300 on the 2019 Kia Forte

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
TSB_FUE0452020-05-05. Service bulletin. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: GAMMA 1.6L-T GDI ULEV MIL ON DTC P0128 AND/OR DTC P0300~304 JUDGEMENT LOGIC IMPROVEMENT (SA419) - This bulletin provides the procedure to improve the logic of the Engine Control Unit (ECU) on some 2019-2020 Forte GT (BDm) vehicles equipped with Gamma 1.6L-T GDI ULEV engines, produced from February 15, 2019 through March 11, 2020, which may exhibit check engine lamp with misfire and/or cooling system related DTCs outlined in the table below.
TSBENG181_R12019-11-07. Service bulletin. TECHNICAL SERVICE BULLETIN TSBENG181_R1: SERVICE ACTION: IGNITION COIL OR COIL RFI SPRING REPLACEMENT FOR DTC P0300, P0301, P0302, P0303, AND/OR P0304 (SA321) - This bulletin provides the procedure to replace all four (4) ignition coils or replace all four (4) coil radio frequency interference (RFI) springs on some 2017-2018MY Forte (YDm) 2.0L MPI vehicles, produced from May 16, 2016 through September 7, 2017, which may experience a malfunction indicator lamp illumination (MIL) ON with DTC P030X (P0300, P0301, P0302, P0303, or P0304).
TSBENG204_R12019-06-04. Service bulletin. TSB: SERVICE ACTION: ECU LOGIC IMPROVEMENT FOR P0300, P0301, P0302, P0303, P0304 AND/OR P219C00, P219D00, P219E00, P219F00 (SA378) - This bulletin has been revised to include additional information. This bulletin provides the procedure to improve the logic of the Engine Control Unit (ECU) on some 2019MY Forte (BDm) vehicles, equipped with a NU 2.0MPI Atkinson engine and produced from July 9, 2018 through March 11, 2019, which may experience a malfunction indicator lamp (MIL) ON with DTC P0300, P0301, P0302, P0303, P0304 and/or P219C00. P219D00, P219E00, P219F00.

3 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.