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Service bulletins for the 2015 Subaru Legacy

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.

527 on file from NHTSA, as of 2026-10-19.

About P05A0 on the 2015 Subaru Legacy: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P05A0 are shown. Show all

Bulletins, newest first
11-174-17R2018-04-02. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. 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).
11-174-17R2017-09-14. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. 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).
11-174-17R2017-09-14. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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 summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.