Use caution
Electrolux groups i40, i41, i43, i44, four beeps, and four flashes and says i40 can indicate a pressure-sensor or water-level-control fault.
Source scopeElectrolux UK freestanding and integrated dishwasher support
Applicability boundaryThe cited article groups i40, i41, i43, i44, four beeps, and four flashes. Confirm the group for the exact PNC.
Safe next stepAfter isolating power, check the user-removable filters and sump for visible foam or debris. Arrange approved service if the signal returns.
Sources: [1]