WenmarOpen by Wenmar Pro

U101A on the 2027 Mack Anthem

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. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name U101A
CBR 2583-1 2026052026-06-02. Service bulletin. Tire Pressure Monitoring System U101A / U101B Fault Solution

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.