Thermador Dishwasher E25 for a Blockage Along the Drain Path

What E25 means

The dishwasher cannot get rid of its wash water and shows E25. Thermador documents this code as a drainage obstruction akin to E22 and E24. The control has detected that the water is not leaving, though it cannot say whether the problem is in the pump, the hose or beyond. The control cannot say whether the pump, the hose or something beyond is responsible, only that the water stays put.

Usual causes of E25

Something clogging the drain path between tub and sink
A drain hose that is kinked or pinched

✓ A safe check worth trying

1. Switch off the dishwasher. 2. Clean the drain pump area, wearing gloves in case of broken glass. 3. Follow the drain hose and make sure it has no kink or pinch. 4. If your installation has an airgap fitting, clear it. 5. Run an empty cycle to test the result.

! Why you should stop here

A drainage problem that stays after these checks suggests a failed part, and only a technician can confirm which one.
Repeated attempts on a blocked drain leave dirty water sitting in the tub, which is unpleasant to clean up.

Taking off a panel yourself does not by default void a manufacturer warranty, yet it can lead to accidental damage, and some manufacturers attach their own service terms. Read your warranty paperwork, or ask us, before you decide.

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E25E25 questions

Should I run an empty cycle after cleaning?

Yes. It is a reasonable test of whether your cleaning cleared the path, and it avoids wasting a full load of dishes on a problem that has not been solved.

How is E25 different from E22 and E24?

Thermador groups it with them as a drainage obstruction. The checks overlap, so the same filter, pump area, hose and airgap review applies to all three.

What if the empty cycle still shows E25?

Then the blockage is out of reach or a part has failed. Stop and call us. We test the pump and trace the drain line before quoting any repair in writing.