# P0304 on the 2018 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 P0304

- [10172127](https://open.wenmarpro.com/bulletins/10172127), 2020-03-05: TECHNICAL SERVICE BULLETIN \- ECU LOGIC IMPROVEMENT FOR P0300, P0301, P0302, P0303, P0304 AND/OR P219C00, P219D00, P219E00, P219F00 \- This bulletin provides the procedure to improve the logic of the Engine Control Module \(ECM\) on some 2017\-2018MY Forte \(YDm\) vehicles, produced from May 15, 2016 through July 27, 2018, which may experience a malfunction indicator lamp \(MIL\) ON with DTC P0300, P0301, P0302, P0303, P0304 and/or P219C00. P219D00, P219E00, P219F00.
- [10167300](https://open.wenmarpro.com/bulletins/10167300), 2019-11-07: TECHNICAL SERVICE BULLETIN TSBENG208\_R1: ECU LOGIC IMPROVEMENT FOR P0300, P0301, P0302, P0303, P0304 AND/OR P219C00, P219D00, P219E00, P219F00 \- This bulletin provides the procedure to improve the logic of the Engine Control Module \(ECM\) on some 2017\-2018MY Forte \(YDm\) vehicles, produced from May 15, 2016 through July 27, 2018, which may experience a malfunction indicator lamp \(MIL\) ON with DTC P0300, P0301, P0302, P0303, P0304 and/or P219C00. P219D00, P219E00, P219F00.
- [10167299](https://open.wenmarpro.com/bulletins/10167299), 2019-11-07: 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 \(P0300, P0301, P0302, P0303, or P0304\).
- [10162047](https://open.wenmarpro.com/bulletins/10162047), 2019-07-04: TSB: ECU LOGIC IMPROVEMENT FOR P0300, P0301, P0302, P0303, P0304 AND/OR P219C00, P219D00, P219E00, P219F00 \- This bulletin provides the procedure to improve the logic of the Engine Control Module \(ECM\) on some 2017\-2018MY Forte \(YDm\) vehicles, produced from May 15, 2016 through July 27, 2018, which may experience a malfunction indicator lamp \(MIL\) ON with DTC P0300, P0301, P0302, P0303, P0304 and/or P219C00. P219D00, P219E00, P219F00.
- [10136501](https://open.wenmarpro.com/bulletins/10136501), 2018-05-14: TSB \- SERVICE ACTION: SPARK PLUG REPLACEMENT \(SA342\) \- This bulletin provides the procedure to replace the spark plugs on some 2018MY Forte \(YDm\), produced from November 21, 2017 through April 12, 2018, and 2018MY Rio \(SC\) vehicles, both produced from November 22, 2017 through February 6, 2018, which may exhibit a malfunction indicator lamp \(MIL\) ON with DTCs P0300 through P0304 due to the spark plug porcelain cracking during manufacturing. Follow the procedure outlined in this bulletin to replace all four spark plugs, whether or not the MIL is ON.
- [10127032](https://open.wenmarpro.com/bulletins/10127032), 2018-01-16: TSB \- SERVICE ACTION: IGNITION COIL OR COIL RFI SPRING REPLACEMENT FOR DTC P030X \(SA321\) \- 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, 2017 through September 7, 2017, which may experience a malfunction indicator lamp illumination \(MIL\) ON with DTC P030X \(P0300, P0301, P0302, P0303, or P0304\).