Dishwasher will not start a cycle; display shows E01 shortly after pressing Start.

Safety first: Unplug the dishwasher or switch off the circuit breaker and close the water supply valve before working on the appliance.

Step-by-step checks:

• Verify water supply: Ensure the kitchen tap feeding the dishwasher is fully open. Check that other taps in the house have normal water pressure.
• Inspect inlet hose: Pull the dishwasher forward slightly and check the inlet hose for kinks, crushing, or sharp bends. Straighten if necessary.
• Clean inlet filter: Turn off the water supply. Unscrew the inlet hose from the rear of the dishwasher. Inside the valve connection there is a small mesh filter; carefully pull it out with needle-nose pliers, rinse under running water, and reinstall.
• Test fill: Restore power and water, then run a quick program. If E01 returns, the inlet valve coil or internal flow sensor may be faulty.
• Advanced check (for experienced DIYers): With power disconnected, access the base panel, locate the water inlet valve assembly, and test coil resistance with a multimeter. If open or shorted, replace the valve.

When to call a technician: If the valve receives power but does not open, or if the flow meter/pressure sensor on the side of the sump or valve body is defective, professional diagnosis and replacement are recommended.