Thermador Dishwasher E24 Error Code: Causes & Fix

What is the Thermador Dishwasher E24 error?#

E24 means the machine cannot clear its water. You are left with a pool in the tub after the run, a gurgle at pump-out, and a sour whiff off the standing water. The likely villains are a kinked or badly routed drain hose, a filter and pump stuffed with debris, or — on a fresh install — a disposal knockout plug left in place. The quick opening move is to check the drain-hose loop and clear the pump.

E24 on a Thermador Dishwasher: likely causes and repair cost#

On a Thermador Dishwasher, the E24 code signals: drain fault / water not clearing.

Typical professional repair: $110–$340 · Difficulty: moderate · often owner-fixable

Fastest thing to try first: Check the drain hose loop and clear the pump of debris.

Symptoms that often accompany E24: Standing water in the tub after the cycle; Gurgling from the drain during pump-out; Sour smell from residual water; Program pauses at the drain step

Technician diagnostic sequence for E24:

1. Follow the drain hose from the Thermador cabinet to the disposal or standpipe and remove any kink or sag that traps water
2. On a freshly installed unit, confirm the garbage-disposal knockout plug was punched out, the single most common cause of a first-run drain fault
3. Pull the filter and reach into the drain-pump throat to clear glass fragments, seeds, or a stray label that stalls the impeller
4. Verify the hose rises into a high loop or air gap so sink water cannot siphon back into the tub

Parts a technician may check or replace: Drain pump; Multi-stage sump filter assembly

Field note: Thermador drain pumps are intolerant of small hard debris — a single sliver of broken glass in the impeller reproduces E24 after every drain. Inspect and clear the impeller chamber fully before assuming the pump motor has failed.

How to troubleshoot the E24 error yourself#

A good deal of this is yours to fix. Trace the drain hose from the cabinet to the disposal or standpipe and take out any kink or sag that traps water, and make sure it climbs into a high loop or air gap so sink water cannot siphon back. If the machine went in recently, confirm the disposal knockout plug was actually punched through — the single commonest reason a first run will not drain. Pull the filter and reach into the pump throat to clear glass slivers, seeds, or a stray label stalling the impeller; these pumps have no patience for small hard bits. If the impeller is clear and the routing right yet the flag holds, the drain pump may have died and wants a technician.

Is the Thermador Dishwasher E24 error worth fixing?#

E24 is well worth fixing and often cheap. Many cases are a freed hose or a punched plug that cost nothing; a real drain-pump repair runs $110 to $340, modest against a machine built to last. Clearing a jammed impeller frequently revives the unit with no new part, so a sound technician checks the pump chamber fully before condemning the motor. On a solid built-in, getting the drain back is always the right call — there is no case for scrapping it over this.

Thermador Dishwasher E24: frequently asked questions#

What does the E24 error mean on a Thermador Dishwasher?#

Water is not clearing from the tub. A kinked hose, a debris-stuffed filter and pump, a jammed impeller, or an unpunched disposal knockout plug is stopping the machine from pumping out.

Is it safe to keep using a Thermador Dishwasher that shows the E24 error?#

It is safe, but you are left with dirty water that turns sour, so it is unpleasant to keep using. Clear the hose and pump before another run rather than letting the unit sit full of stagnant water.

Can I clear the E24 error myself, or do I need a technician?#

Yes, much of it is a self-fix — freeing the drain hose, punching the plug, clearing debris from the pump. Only a genuinely dead pump wants a technician once the simple checks come up clean.

How much does it cost to repair the E24 error on a Thermador Dishwasher?#

A drain-pump repair runs about $110 to $340, though many cases cost nothing — a freed hose or a punched plug. A technician clears the impeller chamber before assuming the pump motor has died.

Which parts usually fail when a dishwasher throws the E24 code?#

The drain pump and the sump filter are most often in play, though the real cause is frequently a kinked hose, a jammed impeller, or a disposal knockout plug left in on a fresh install.

Is a Thermador Dishwasher with the E24 error worth repairing?#

Yes. Most fixes are free or land at $110 to $340 for a pump — far below a new build. Since a jammed impeller often revives the machine with no part, clearing the drain is always the first move.

Why does drain hose kinked or low trigger the E24 error?#

A kinked or sagging hose traps water so the pump cannot push it clear. The machine still senses water in the tub after the drain step, so it posts E24 to report the run could not empty.