ATTENTION:
GENERAL MANAGER

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PARTS MANAGER

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CLAIMS PERSONNEL

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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
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SERVICE MANAGER

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© 2021 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY:

2018-2021MY Crosstrek 2.0L DI & PHEV
2017-2021MY Impreza 2.0L DI
2021MY Crosstrek 2.5L DI
2019-21MY Forester 2.5L DI
2020-22MY Legacy & Outback 2.5L DI

NUMBER: 09-81-21R

SUBJECT:

Fuel Injector- Design Change
Misfire DTC P030* / Engine Knocking / DTC P219C-D-E-F

DATE:

09/24/21

REVISED:

06/12/26

INTRODUCTION:
This bulletin announces design changes made to the fuel injector and fuel pipe in response to the
DTCs listed above. Changes have been made to the internal needle flange to enhance durability. In
some cases, the needle flange may develop excessive internal wear causing restricted fuel flow which
can result in engine vibration and / or engine misfire DTC(s). This condition can also result in DTC
P219C/D/E/F. Since a similar concern and / or DTC(s) may result from carbon buildup, it is critical
to confirm if the condition continues after two carbon cleanings with P.E.A. are completed before
proceeding with any part replacement.
PRODUCTION CHANGE INFORMATION:
The new injectors and pipes have been incorporated into vehicle production as per the table below.
MODEL

STARTING VIN

Impreza (4 Door)

TBD

Impreza (5 Door)

SG066112

Crosstrek

SH296367

Forester

MH590961

Legacy

N3026427

Outback

N3271290

BRZ

TBD

CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.

Continued...
Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 1 of 6

PART INFORMATION:
FUEL INJECTORS: The new fuel injector tips have changed from 3 holes to 6 holes to reduce
the fuel pulsation.

Injector Assembly Part Number

Flow Rate Number

16611AA972

MARK 4

16611AA982

MARK 5

16611AA992

MARK 6

16611AB072

MARK 7

16611AB082

MARK 8

16611AB092

MARK 9

16611AB030 (2.5L)

N/A

16611AB06A (2.5L)

N/A

FUEL PIPES (Impreza/Crosstrek w 2.0L ONLY): The fuel pipe orifice diameter has changed from
3mm to 2mm to reduce fule pulsation.

Part Description

Part Number

PIPE ASSEMBLY FUEL,RIGHT

17522AB091

PIPE ASSEMBLY FUEL,LEFT

17523AB101

Continued...
Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 2 of 6

VERY IMPORTANT:
•

Using the illustration below for identification reference, always replace an injector assembly
and fuel pipe (if applicable) with the newer vendor part number than the originally equipped.

•

Using the illustration below for identification reference, always replace an injector assembly
with the same flow rate number as originally equipped. The flow rate does not apply to 2.5L
engines.

INJECTOR IDENTIFICATION:

FUEL PIPE IDENTIFICAITON (IMPREZA/CROSSTREK 2.0L ONLY):

SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
NOTE: Subaru Select Monitor data may be required for processing Warranty Claims related to these
procedures.
Follow the proper diagnostics for any of the DTCs listed using the procedures provided in the
applicable Service Manual. BEFORE any injector assembly replacement, it is important to perform

Continued...
Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 3 of 6

a carbon deposit cleaning procedure FIRST as outlined in TSB 09-74-21. Doing so (if successful)
can prevent unnecessary injector replacements which may not resolve the condition. If injector
replacement is still determined to be required, the cleaning procedure will remove carbon from
surrounding combustion chamber components for any newly installed injector(s).

STEP 1)

Is DTC P219C/D/E/F current or stored in the ECM memory?
Yes

Proceed to STEP 8.

No

Proceed to next STEP.

NOTE: DTC’s found stored in the ECM MUST be recorded and entered into the note section of the
claim. This is a REQUIREMENT for Warranty claim submission.
STEP 2)

Confirm DTC P030* is current or stored in the ECM memory.

STEP 3)

Verify any engine vibration or knocking condition has been experienced by the customer.

STEP 4)

If an injector(s) is determined to be the fault source, perform the P.E.A. carbon cleaning
procedure as per 09-74-21 along with a post-cleaning road test. Start with STEP
1C of TSB 09-74-21. Follow balance of steps for DINA models. If more than one
PEA cleaning is required, change the engine oil.

STEP 5)

Has the condition been resolved?
Yes

No additional work is needed. See Warranty / Claim Information
section of this bulletin.

No

Proceed to next STEP.

STEP 6)

Perform a second P.E.A. carbon cleaning procedure as per 09-74-21 followed by a road
test. Perform an engine oil and filter change following this second cleaning.

STEP 7)

Has the condition been resolved?
Yes

No additional work is needed. See Warranty / Claim Information
section of this bulletin.

No

Proceed to next STEP.

Continued...
Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 4 of 6

STEP 8) Identify the injector assembly(s) by confirming the vendor part number and flow rate

number engraved on the injector body as shown in the Parts Information section above.

Replace the injector(s) as necessary with the NEW part(s) having the matching flow rate.
Identify the left and right fuel rail ID and replace as needed for Impreza /Crosstrek 2.0L models.
Remove any carbon build-up found during replacement: Engine > FUEL INJECTION (FUEL
SYSTEMS) > Fuel Injector.

IMPORTANT: Do Not replace fuel injector(s) without performing two P.E.A. carbon cleaning
procedures FIRST.
CRITICAL: When replacing injector(s), NEVER reuse parts identified in the applicable Service
Manual as one-time-use items: Engine > FUEL INJECTION (FUEL SYSTEMS) > General
Description > COMPONENT. This area of the Service Manual uses a black star in the illustrations
to indicate one-time use parts.
IMPORTANT NOTE: Whenever reconnecting the ground cable terminal to the battery sensor,
torque to 7.5Nm (5.5ft.-lbs. or 66inch-lbs.) while supporting the sensor with the other hand as
outlined in the applicable Service Manual under: STARTING/CHARGING SYSTSEMS > Battery
Sensor.
WARRANTY / CLAIM INFORMATION:
REMINDER: Subaru Select Monitor data may be requested when processing Warranty Claims
related to these procedures. This is including but not limited to DTC’s stored in the ECM.
For vehicles within the Basic New Car Limited or Powertrain Limited Warranty period, this repair
may be submitted using the following claim information:
Carbon Cleaning ONLY
Labor Description

Labor
Operation #

Labor Time

Fail Code

DTC DIAGNOSIS, ONE PEA CLEANING

A449-221

6.1

DGN-42

DTC DIAGNOSIS, OIL CHANGE & TWO PEA CLEANINGS

A449-222

8.8

DG0-42

For vehicles within the Basic New Car Limited or Powertrain Limited Warranty period or covered by
an active Subaru Added Security Powertrain, Classic or Gold plan, this repair may be submitted using
the following claim information:
Carbon Cleaning with Injector(s) Replacement ONLY
Labor Description

Labor
Operation #

Labor Time

Fail Code

DTC DIAG, OIL CHANGE, 2 PEA TREATMENTS, ONE DIRECT FUEL
INJECTOR REPLACED

B442-308

10.1

DCY-42

EACH ADDITIONAL DIRECT INJECTOR ASSEMBLY REPLACED

C442-305

0.2

DG0-42

Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 5 of 6

IMPORTANT REMINDERS:
•

SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repairs.

Continued...
Bulletin Number: 09-81-21R; Revised: 01/22/24

Page 6 of 6