P0304 on the 2011 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.
| 1111612R | 2023-03-06. Service bulletin. DTC P0301 ? P0304 and P050A Reprogramming |
|---|---|
| 11-100-11R | 2017-03-01. Service bulletin. DIFFICULTY STARTING, ROUGH IDLE DTCS P0301, P0302, P0303, P0304 P0340, P0341, P0345, P0346 |
| 11-130-13R | 2017-01-31. Service bulletin. "DIFFICULTY STARTING, ROUGH IDLE, CAM POSITION OR MISFIRE DTCS P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P0301, P0302, P0303 OR P0304 - THIS BULLETIN PROVIDES INSPECTION AND REPAIR PROCEDURES FOR INTAKE AND EXHAUST CAMSHAFT POSITION-RELATED AND/OR ENGINE MISFIRE DTCS FOR THE FA AND FB ENGINE-EQUIPPED MODELS LISTED ABOVE." |
| 11-116-12R | 2016-11-18. Service bulletin. "THE PURPOSE OF THIS BULLETIN IS TO ANNOUNCE THE AVAILABILITY OF UPDATED ECM REPROGRAMMING FILES TO ADDRESS DTCS P0301 – P0304 AND P050A. NOTE: THESE REPROGRAMMING FILES ARE INTENDED TO ADDRESS A CONDITION WHEN DTCS ARE PRESENT FOR MISFIRE, BUT NO ACTUAL DRIVABILITY CONDITION EXISTS OR HAS BEEN REPORTED BY THE CUSTOMER. ACTUAL ENGINE MISFIRE OR ROUGHNESS CONDITIONS MUST BE DIAGNOSED ACCORDING TO THE PROCEDURES LISTED IN THE APPLICABLE SERVICE MANUAL." |
4 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.