Dishwasher stops and displays i40; may be accompanied by poor draining or unusual fill/drain behavior.

Safety first: Disconnect power before accessing internal components.

• Clean sump and filters: Remove and thoroughly clean the filter assembly and sump area to ensure proper water level and flow.
• Inspect pressure hose: Access the side or bottom of the tub (depending on model) to locate the small pressure hose running from the sump to the pressure sensor. Check for kinks, clogs, or cracks. Clear any blockage with compressed air or by gently blowing through the hose.
• Check connections: Ensure the pressure sensor electrical connector is fully seated and free of corrosion.
• Replace sensor if needed: If the hose is clear and wiring is intact but i40 persists, replace the pressure sensor with the correct Frigidaire part number for your model.

If you are not comfortable removing side panels or working near sharp metal edges, seek professional service.