# P0300 on the 2015 Subaru Forester

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

- [10187308](https://open.wenmarpro.com/bulletins/10187308), 2021-02-18: This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator's current output outside of the specified limits.
- [10182588](https://open.wenmarpro.com/bulletins/10182588), 2020-11-16: This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator?s current output outside of the specified limits.
- [10120993](https://open.wenmarpro.com/bulletins/10120993), 2017-10-27: New Alternator Assembly. This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator?s current output outside of the specified limits.
- [10120966](https://open.wenmarpro.com/bulletins/10120966), 2017-10-27: This bulletin announces the availability of new reprogramming files for optimizing the ECM to address the following customer concern: ? Rough idle after a warm engine restart. In rare cases, DTC P0300 may also be stored.
- [10117541](https://open.wenmarpro.com/bulletins/10117541), 2017-09-14: 2.5L MODELS ONLY. This bulletin provides a procedure for diagnosis and repair of DTC P0300 which may result from fluctuation of the alternator's current output outside of the specified limits.
- [10087222](https://open.wenmarpro.com/bulletins/10087222), 2016-12-27: "THIS BULLETIN ANNOUNCES THE AVAILABILITY OF NEW REPROGRAMMING FILES FOR OPTIMIZING THE ECM TO ADDRESS THE FOLLOWING CUSTOMER CONCERN: • ROUGH IDLE AFTER A WARM ENGINE RESTART. IN RARE CASES, DTC P0300 MAY ALSO BE STORED."