Water remains in the bottom of the dishwasher after cycle, but no error code is shown.

Safety first: Disconnect power before working on the drain system.

• Clean filters and sump: Remove filters and check for debris in the sump and around the drain pump inlet.
• Check drain hose: Ensure the hose is not kinked and is installed with a high loop. Detach from sink trap and flush with water.
• Inspect non-return valve: Access the drain pump cover and check the rubber flap valve. Clean and ensure it closes properly to prevent backflow.
• Run drain program: After reassembly, run a drain-only or quick program to confirm that water is fully removed.