Water left in the dishwasher: safe checks and when to call for service

First, tell normal water from a drainage problem

Many dishwashers retain about 1 to 2 cups of clean water in the sump or filter cup. This helps keep the pump seals lubricated between cycles.

Water covering the tub floor, murky or dirty standing water, or water rising above the bottom rack is not the usual small residue and can indicate an incomplete drain cycle or blockage.

Safe checks: interrupted cycle and filter

A cycle interrupted by opening the door or a brief power loss may leave water behind. Use the dishwasher’s Cancel/Reset control to ask it to drain.

Food scraps, grease, or small objects such as labels and twist ties can clog the filter assembly and restrict water reaching the pump.

• Press and hold Cancel/Reset, typically for 3–5 seconds, close the door, and let the dishwasher attempt a forced drain.
• Before reaching into the sump, disconnect power. Twist and lift out the removable filter assembly, rinse it under warm running water with a soft brush, and reinstall it securely.

Safe checks: drain connection, hose, and suds

If the dishwasher drains through a garbage disposal or sink branch, running the disposal may clear grease or waste at the drain connection. On a newly installed disposal, the knockout plug inside its dishwasher inlet must have been removed.

A blocked air gap, a kinked hose, or excess suds can also interfere with draining. Check only accessible areas and connections.

• For a sink-mounted air gap, remove its chrome cap and inner cylinder and clear debris or sediment.
• If there is no air gap, the drain hose should form a high loop—typically at least 32 inches above the floor or secured under the countertop. Check under the sink for sharp bends, crushing, or heavy objects pressing on the hose.
• Hand dish soap or too much detergent can create suds that prevent the pump from moving water properly. Turn off the dishwasher, wait for the suds to dissipate, then run a rinse cycle.

Protect yourself and contain water

Turn off power at the main circuit breaker or unplug the dishwasher before reaching into the sump or inspecting plumbing lines.

Broken glass and ceramic pieces can collect near the filter housing. Wear cut-resistant gloves or use caution when clearing the area.

• Before disconnecting an under-sink hose, place a shallow pan and towels underneath to catch residual water.
• If the dishwasher must be pulled out, use a cup and sponge to remove tub water first to minimize spills.

When to stop and call a qualified technician

Contact a qualified service technician when the safe owner checks above do not resolve the problem. Do not attempt internal mechanical or electrical repairs.

A technician is needed if an internal pump impeller is broken, a drain check valve is seized shut, a drain solenoid or actuator has failed, or internal wiring or control modules malfunction.

• Call if the filter and drain line are clear but the machine hums, buzzes, or stays silent during draining without removing the water.
• Call if drain-specific error codes, such as Bosch E24/E25, keep appearing after external filters, hoses, and disposal plugs have been checked.
• Call if the base-pan float switch has tripped and the dishwasher stays in continuous drain mode or will not run cycles.

Frequently asked questions

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