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Service bulletin 11-174-17R

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 id10117535
Published by NHTSA2017-09-14
Manufacturer's number11-174-17R
Manufacturer's date2017-06-23
NHTSA componentELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

This bulletin announces the availability of reprogramming files to optimize the ECM and address the following customer concerns: * Check Engine light coming on (with DTC P05A0 stored in memory). * Potential battery discharge (dead battery) after repeated periods of short-trip driving. * A high (or "hanging") engine RPM after depressing the clutch pedal (Forester only).

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, 12-volt battery

Trouble codes named

P05A0

Vehicles listed
SUBARU FORESTER2017
SUBARU LEGACY2015, 2016, 2017
SUBARU OUTBACK2015, 2016, 2017
SUBARU WRX2015, 2016, 2017

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
07-207-22R2023-08-02. Service bulletin. In the interest of customer satisfaction, Subaru of America, Inc. is extending the New Car Basic Warranty coverage for the 12 Volt batteries used in the above listed models and model years beyond the original three (3) years or thirty six thousand miles (36,000), whichever comes first.
07-223-23R2023-08-02. Service bulletin. This bulletin announces the availability of a new Genuine Subaru Replacement Battery introduced to replace the current battery (SOA821B400). The new battery (SOA821B950) has a higher capacity and is slightly different in size.
07-223-232023-08-02. Service bulletin. This bulletin announces the availability of a new Genuine Subaru Replacement Battery introduced to replace the current battery (SOA821B400) once current inventory is depleted.
SubaruNet Announ2022-10-04. Service bulletin. Battery Class Action Settlement Updates.
SubaruNet Announ2022-10-04. Service bulletin. Battery Class Action Settlement Resources. (2)
078815R2020-11-16. Service bulletin. This Service Information bulletin provides a procedure to use when installing a SOA821B200 replacement battery in a 2015MY WRX (2.0L). The sensor located on the battery ground terminal interferes with the battery vent cap used on the replacement battery.
07-75-13R2020-04-02. Service bulletin. This Bulletin provides information regarding DTC P0606 related specifically to the determination of this code on Forester Turbo and applicable WRX models.
07-75-13R2018-04-16. Service bulletin. On Forester Turbo and applicable WRX models, after re-connecting the battery, if the ignition switch is turned back ?ON? within one minute after the first time the ignition is turned ?OFF?, it becomes possible for the CEL to illuminate storing DTC P0606 in memory. The code will not occur immediately, but may occur after a period of time depending upon how the vehicle is operated
11-174-17R2017-09-14. Service bulletin. This bulletin announces the availability of reprogramming files to optimize the ECM and address the following customer concerns: * Check Engine light coming on (with DTC P05A0 stored in memory). * Potential battery discharge (dead battery) after repeated periods of short-trip driving. * A high (or "hanging") engine RPM after depressing the clutch pedal (Forester only).
07-106-162016-11-08. Service bulletin. THIS BULLETIN ANNOUNCES A CHANGE TO THE BATTERY SENSOR TO PREVENT UNNECESSARY OCCURRENCE OF DTC P1C00 BEING SET / STORED IN THE ECM MEMORY.