Hisense Dishwasher Error E03

DIY Fix Check and clear drainage and filters

1. Turn off and unplug the dishwasher.
2. Remove and clean the dishwasher filter and any visible debris from the bottom of the tub.
3. Inspect the drain hose for kinks or blockages and straighten or clear them if found.
4. Run a short rinse cycle to see if water drains correctly.

DIY Fix Check water supply and basic reset

1. Ensure dishwasher door is fully closed and latched.
2. Verify that the water supply valve is turned on and water pressure is normal.
3. Try resetting the dishwasher by turning off power at the breaker for 1–2 minutes and then restarting.
4. Observe whether E03 reappears during a new cycle.

Technician Only Inspect and test drain pump and sensors

1. Disconnect power and water to the dishwasher.
2. Remove access panel and inspect the drain pump for obstructions or mechanical failure.
3. Test drain pump motor with a multimeter for continuity.
4. Check water level sensor and related wiring for proper function.
5. Replace faulty components as needed.

Parts needed: Drain pump, Drain hose, Water level sensor