# B1B40 on the 2020 Volvo XC90

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 B1B40

- [10165237](https://open.wenmarpro.com/bulletins/10165237), 2019-09-23: If there is message in the DIM about ?Sensor Blocked? and the car has DTC CEM B1B3629 and/or B1B4029, follow instructions under ?Service?.