# C1C40 on the 2025 Subaru Impreza

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 C1C40

- [11029338](https://open.wenmarpro.com/bulletins/11029338), 2026-03-03: This bulletin announces the availability of new reprogramming files developed to address cases of DTC C1C40 being detected by the Electronic Brake Booster \(EBB\) in addition to Failure Detail Code 30A2 stored within the Freeze Frame Data \(FFD\).
- [11021255](https://open.wenmarpro.com/bulletins/11021255), 2025-08-04: This bulletin announces the availability of new reprogramming files developed to address cases of DTC C1C40 being detected by the Electronic Brake Booster \(EBB\) in addition to Failure Detail Code 30A2 stored within the Freeze Frame Data \(FFD\).
- [11018913](https://open.wenmarpro.com/bulletins/11018913), 2025-06-03: This bulletin announces the availability of new reprogramming files developed to address cases of DTC C1C40 being detected by the Electronic Brake Booster \(EBB\) in addition to Failure Detail Code 30A2 stored within the Freeze Frame Data \(FFD\).