C1103 on the 2020 Porsche Cayenne
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.
| 2121.4 | 2026-08-05. Service bulletin. ACC Dynamic Calibration Fault C110300 |
|---|---|
| No. 2121.3 | 2025-08-04. Service bulletin. Instructions on advanced technical information for the Cayenne - ACC Dynamic Calibration Fault C110300 |
| No. 2121.2 | 2024-08-06. Service bulletin. Instructions on advanced technical information for the Cayenne - dynamic calibration fault C110300 |
3 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.