U1121 on the 2021 Porsche Panamera
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.
| No. 2202 | 2022-03-03. Service bulletin. instructions on advanced technical information for 2021 E-Hybrid OBD Fault. U112100 DTC D1211D “Data bus - missing message”. |
|---|
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.