# Service bulletin 09\-74\-21R

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10201059
- Published by NHTSA: 2021\-09\-04
- Manufacturer's number: 09\-74\-21R
- Manufacturer's date: 2021\-08\-30
- NHTSA component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE

## NHTSA's 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 \(e.g. intake valves and / or manifold, and combustion chambers\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201059-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10201059-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system, Fuel tank

## Vehicles listed

- 2019 to 2021 SUBARU ASCENT
- 2018 to 2021 SUBARU CROSSTREK
- 2014 to 2021 SUBARU FORESTER
- 2017 to 2021 SUBARU IMPREZA
- 2020 to 2021 SUBARU LEGACY
- 2020 to 2021 SUBARU OUTBACK
- 2015 to 2021 SUBARU WRX

## Other bulletins for the same vehicles and component

- [09\-81\-21R](/bulletins/10249614.md), 2024-02-02, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE. This bulletin announces design changes made to the fuel injector assembly in response to the DTCs listed.
- [09\-82\-23](/bulletins/10249599.md), 2024-02-02, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin announces design changes made to the fuel tank and vent tubes.
- [09\-82\-23](/bulletins/10244886.md), 2023-11-06, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin announces design changes made to the fuel tank and vent tubes. An enhanced material has been incorporated into the production of these components.
- [041314](/bulletins/10232871.md), 2023-03-13, Service bulletin: POWER TRAIN; STEERING; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; STEERING:ELECTRIC POWER ASSIST SYSTEM. New Electric Power Steering \(EPS\) Control Unit for DTC C2532
- [Subarunet Announ](/bulletins/10201029.md), 2021-09-03, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. Subaru of America, Inc. \(Subaru\) is initiating a new safety recall in which the fuel pump may become inoperative.
- [09\-71\-20](/bulletins/10173198.md), 2020-04-03, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin provides a service procedure to address a small number of concerns regarding a rattle/ buzz\-type sound coming from the fuel tank area.
- [09\-64\-16](/bulletins/10111067.md), 2017-08-14, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. This Service Information bulletin announces a change to the shape of the rubber cap used on the flange nuts securing the sub\-level sending unit to the fuel tank. In addition, two of the caps are now used in production instead of only one. This change was made to enhance productivity during vehicle assembly.
- [09\-55\-13](/bulletins/10090292.md), 2017-02-03, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. THIS BULLETIN INFORMS OF CHANGES TO BOTH THE PADDING ON THE FUEL TANK ASSEMBLY AND THE CUSHIONS FOUND ON THE FUEL DELIVERY TUBING CONNECTING THE MAIN FUEL PUMP ASSEMBLY TO THE SUB\-LEVEL UNIT \(TRANSFER PUMP\).
- [09\-55\-13](/bulletins/10087581.md), 2017-01-03, Service bulletin: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY. THIS BULLETIN INFORMS OF CHANGES TO BOTH THE PADDING ON THE FUEL TANK ASSEMBLY AND THE CUSHIONS FOUND ON THE FUEL DELIVERY TUBING CONNECTING THE MAIN FUEL PUMP ASSEMBLY TO THE SUB\-LEVEL UNIT \(TRANSFER PUMP\).
- [09\-57\-14](/bulletins/10084245.md), 2016-11-15, Service bulletin: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY. FUEL \(GASOLINE\) FILLER DOOR \(FLAP\) DOES NOT OPEN \- THIS BULLETIN PROVIDES NEW PART NUMBER INFORMATION ALONG WITH A SERVICE PROCEDURE TO ADDRESS A CUSTOMER CONCERN OF THE FUEL FILLER DOOR NOT OPENING WHEN LIFTING THE INTERIOR RELEASE LEVER.

JSON: [/v1/bulletins/10201059](/v1/bulletins/10201059)

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