- Confirm the water supply is fully open and household water flow is normal.
- Check the inlet hose for kinks, damage, or blockages and clean any accessible inlet filter.
- Run a fresh cycle and confirm the appliance fills normally.
Indicates a pressure sensor or water level control fault. On the AEG FSE76738P, this code relates to the dishwasher and should be interpreted together with how the appliance is behaving right now.
- The dishwasher displays I40 instead of normal status information.
- The current cycle, function, or startup sequence may stop, pause, or behave differently than expected.
- The same code may return after a reset if the underlying issue is still present.
- Water supply is restricted, shut off, or below the required pressure.
- An inlet hose, filter, valve, or related connection is blocked, kinked, or installed incorrectly.
- Check whether the fault started after installation, moving the appliance, or plumbing work.
- Make sure all inlet connections are seated correctly and not restricted.
- If the code returns after the basic supply checks, the inlet valve or level control may need service.
- Isolate water and power before disconnecting inlet hoses or fittings.
Book service if I40 returns after the supply and inlet checks, or if there is visible damage to the hose, valve, or fittings.
Can I40 clear after a reset?
Sometimes a temporary glitch clears after one full reset, but a repeated return usually means the same underlying issue is still there.
Should I keep using the appliance if it works again briefly?
Only if the code stays away and the appliance behaves normally. If the same code comes back, stop and move to service or more targeted diagnosis.