Fuel Injector- Design Change Misfire DTC P030* / Engine Knocking / DTC P219C P219D P219E P219F – 2017-2022 Subaru

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Bulletin Number: 09-81-21R; Revised: 01/22/24 Page 1 of 5
SERVICE BULLETIN
Continued…
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
R: SUBJECT: Fuel Injector- Design Change
Misfire DTC P030* / Engine Knocking / DTC P219C-D-E-F
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.
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09-81-21R E: 09/24/21 D: 01/22/24
INTRODUCTION:
This bulletin announces design changes made to the fuel injector assembly 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 have been incorporated into vehicle production as per the table below
MODEL
Impreza (4 Door)
STARTING VIN
TBD Impreza (5 Door) MG138406 Crosstrek M8330452 Forester MH590961 Legacy N3026427 Outback N3271290 BRZ TBD
ATTENTION:
GENERAL MANAGER 0
PARTS MANAGER 0
CLAIMS PERSONNEL 0
SERVICE MANAGER 0
IMPORTANT – All
Service Personnel Should Read and Initial in the boxes provided, right.
© 2021 Subaru of America, Inc. All rights reserved. PART INFORMATION: Injector Assembly Part Number
16611AA971
16611AA981
16611AA991
16611AB071
16611AB081
16611AB091
16611AB030 (2.5L)
16611AB06A (2.5L) Flow Rate Number
MARK 4
MARK 5
MARK 6 MARK 7 MARK 8 MARK 9
N/A N/A VERY IMPORTANT:
• Using the illustration below for identification reference, always replace an injector assembly 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. Continued…
Bulletin Number: 09-81-21R; Revised: 01/22/24 Page 2 of 5 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 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 No Proceed to STEP 8. 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. Continued…
Bulletin Number: 09-81-21R; Revised: 01/22/24 Page 3 of 5 STEP 5) Has the condition been resolved? Yes No No additional work is needed. See Warranty / Claim Information
section of this bulletin. 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 No additional work is needed. See Warranty / Claim Information
section of this bulletin. Proceed to next STEP. 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. 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: Continued…
Bulletin Number: 09-81-21R; Revised: 01/22/24 Page 4 of 5 Bulletin Number: 09-81-21R; Revised: 01/22/24 Page 5 of 5
Carbon Cleaning ONLY
Labor Description Labor
Operation # Labor Time Fail Code DTC DIAGNOSIS, ONE PEA CLEANING
DTC DIAGNOSIS, OIL CHANGE & TWO PEA CLEANINGS A449-221 A449-222 6.1
8.8 DGN-42 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
EACH ADDITIONAL DIRECT INJECTOR ASSEMBLY REPLACED B442-308 C442-305 10.1
0.2 DCY-42 DG0-42 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.

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