SUBARU

15-340-26

Manufacturer communications

Publication date: 2026-07-31
Received by NHTSA: 2026-08-04
NHTSA record numbers: 11035662

Manufacturer summary

Original wording in English

This bulletin announces the availability of reprogramming files for the Central Electronic Control Module (C-ECM). The updated logic has been developed to address Diagnostic Trouble Code (DTC) B2A20 - LOST COMMUNICATION ETHERNET FROM DCM TO HU.

NHTSA manufacturer communications ↗

Reported code forms

B2A20

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

SubaruB2A20

LOST COMMUNICATION ETHERNET FROM DCM TO HU

NHTSA 11035662

Check vehicle applicability

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Make	Model	Model year
Subaru	OUTBACK	2026

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