Magnussen was penalised for an incident with Pierre Gasly, which could add two consequential penalty points to his Super Licence, and ensure that he could sit out the next race in Baku.
An automatic one race ban is applied if a driver is awarded 12 penalty points in a 12-month timeframe.
Two penalty points were added to his licence, and if history repeats itself Magnussen is likely to receive a race ban.
Magnussen may have competed in his last Italian GP, after being replaced at Haas next year by the incoming Ollie Bearman and Esteban Ocon.
With only two seats remaining on the grid for next year, it is unlikely that the 31-year-old will be offered a full-time opportunity on the F1 grid for 2025.
After the race, the FIA confirmed that Magnussen had been given two Superlicense points, triggering an automatic one-race ban.