# B2A20 on the 2026 Subaru Outback

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B2A20

- [11035662](https://open.wenmarpro.com/bulletins/11035662), 2026-08-04: 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.
- [11032034](https://open.wenmarpro.com/bulletins/11032034), 2026-05-04: This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
- [11029347](https://open.wenmarpro.com/bulletins/11029347), 2026-03-03: This Service Information Bulletin was developed to provide interim guidance for 2026 model year vehicles exhibiting DTC B2A20 with gen 4 Telematics.