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Service bulletin 11-193-19

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 id10168604
Published by NHTSA2019-12-02
Manufacturer's number11-193-19
Manufacturer's date2019-11-08
NHTSA componentELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

This bulletin announces availability of reprogramming files to optimize the Engine Control Module (ECM). These new files will stabilize engine RPM and combustion during warm-up due to slight differences in the air-fuel ratio between cylinders causing DTC P0300 to set.

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, Engine

Trouble codes named

P0300

Vehicles listed
SUBARU BRZ2017, 2018, 2019, 2020

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

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