Cleaning Procedure for Carbon Deposit Removal to Address Engine Misfire DTCs, Black Smoke from the Exhaust, Lack of Power, Knocking (Ping) and / or Rough Idle Concerns – 2014-2022 Subaru

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NHTSA ID Number: 10222368 Manufacturer Communication Number: 09-74-21R Summary This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components.   NUMBER: 09-74-21R DATE:  05/06/21 REVISED: 09/27/22 APPLICABILITY: 2020-22MY Legacy and Outback 2.5L NA and 2.4L DIT 2018-22MY Crosstrek 2017-22MY Impreza 2019-22MY Forester 2.5 …

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Difficulty Starting, Rough Idle, Cam Position or Misfire DTCs P0340, P0341, P0345, P0346, P0365, P0366, P0390, P0391, P0301, P0302, P0303 or P0304 – 2011-2014 Subaru

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NHTSA ID Number: 10235845 Manufacturer Communication Number: 1113013R Summary Difficulty Starting, Rough Idle, Cam Position or Misfire DTCs   NUMBER: 11-130-13R DATE: 04/05/13 REVISED: 01/28/14 APPLICABILITY: 2013MY Legacy and Outback 2.5L Models 2012-13MY Impreza 2.0L Models 2013MY XV Crosstrek 2011-2014MY Forester 2013MY BRZ SUBJECT: Difficulty Starting, Rough Idle, Cam Position or Misfire DTCs P0340, P0341, P0345, P0346, …

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Reprogramming File Availability for DTC P0300 and Rough Idle – 2015 Subaru WRX & Forester 2.0L Turbo (DIT)

NHTSA ID Number: 10120966 Manufacturer Communication Number: 11-161-16   Summary 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.   2 Affected Products Vehicles MAKE MODEL YEAR SUBARU FORESTER 2015 SUBARU

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