# P121B on the 2022 Maserati MC20

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 P121B

- [10239772](https://open.wenmarpro.com/bulletins/10239772), 2023-07-31: Rapid Update 639 \- for the Engine Control Module software to enhace the detection strategy of the exhaust valve's angular position and prevents the improper triggering of DTCs P1217/P121B.