# P22FB on the 2022 Chevrolet 4500HD

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.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P22FB

- [10243962](https://open.wenmarpro.com/bulletins/10243962), 2023-10-12: This technical bulletin provides repair information to correct a customer concern of DTC P22FB/P22FE CALIBRATION UPDATE \- REPROGRAM DEF CONTROL UNIT \(DCU\).