U1146 on the 2026 Mack Pioneer
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.
| CBR 2545-3 072026 | 2026-08-03. Service bulletin. CBR - The purpose of this CBR is to provide guidance on fault code U114688. |
|---|---|
| CBR 2545-1 202601 | 2026-02-03. Service bulletin. CBR - U114688 VMCU Communication Fault - AN (4) - PR (4). |
2 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.