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Service bulletin 11-184-18

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10153613
Published by NHTSA2019-02-25
Manufacturer's number11-184-18
Manufacturer's date2018-12-10
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE

NHTSA's summary

This bulletin announces reprogramming file availability to optimize the ECM. These new files prevent an incorrect diagnosis of DTC P119F: AIR FUEL RATIO IMBALANCE FOR DIRECT INJECTION (BANK 1 FLUCTUATION ENGINE SPEED) and DTC P219A: AIR FUEL RATIO IMBALANCE (BANK 1).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Fuel system, Software

Trouble codes named

P119F, P219A

Vehicles listed
SUBARU BRZ2017, 2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
15-236-18R2023-07-03. Service bulletin. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
Subaru Starlink2020-10-05. Service bulletin. Update your STARLINK Multimedia Software and Navigation Maps.
Subaru Starlink2020-10-05. Service bulletin. Update for STARLINK Multimedia Software and Navigation Maps.
GEN 3-12019-05-28. Service bulletin. Immediately discontinue the use of latest 2019 MY Gen 3.1 Harman Software update.
15-236-18R2019-05-28. Service bulletin. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed above. The procedure will involve either downloading the software update files from Subarunet (or using those sent directly from Nuspire) and transferring them onto a flash drive for head unit installation. It is VERY IMPORTANT to read and understand this information completely to understand all changes from prior releases before proceeding.
15-204-16R2019-05-28. Service bulletin. Subaru of America, Inc. (Subaru) is recalling 2018 model year Legacy, Outback, and BRZ vehicles equipped with a certain combination of head unit hardware and software, due to the possibility of noncompliance with Federal Motor Vehicle Safety Standard (FMVSS) 111 ? ?Rear Visibility.?
WTZ-85R2019-05-28. Service bulletin. Subaru of America, Inc. (Subaru) is recalling 2018 model year Legacy, Outback, and BRZ vehicles equipped with a certain combination of head unit hardware and software, due to the possibility of noncompliance with Federal Motor Vehicle Safety Standard (FMVSS) 111 ? ?Rear Visibility.?
15-211-17R2019-03-11. Service bulletin. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3 Audio and Navigation head units utilized in the models as listed above. The procedure will involve either downloading the software update files from Subarunet (or using those sent directly from Nuspire) and transferring them onto a flash drive for head unit installation.
WUA-86R2019-03-11. Service bulletin. In the interest of customer satisfaction, Subaru of America, Inc. (Subaru) is initiating a service program to update the Harman Kardon head unit on certain vehicles with the latest version of software.
15-211-17R2018-12-10. Service bulletin. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3 Audio and Navigation head units utilized in the models as listed above. The procedure will involve either downloading the software update files from Subarunet (or using those sent directly from Nuspire) and transferring them onto a flash drive for head unit installation.