# U1FFF on the 2023 Mack LR

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 U1FFF

- [10237344](https://open.wenmarpro.com/bulletins/10237344), 2023-06-05: CBR: Diagnostic Trouble Code \(DTC\) U1FFF68 \- Factory Mode Active, Event Information \- Model Year \(MY\) 2023