The Short Answer
To drain a Bosch dishwasher, close the door and hold the Start/Reset button for about three seconds — the machine runs its cancel-and-drain sequence. If water remains, work the drain path in order: twist out and clean the filter in the tub floor, check the impeller cover beneath it for debris (the usual culprit behind E25), and confirm the drain hose isn't kinked or looped wrong (the usual culprit behind E24). A pump that hums with a clear path has retired, and that's a same-day, stocked repair.
The Three-Second Hold
Bosch gave every owner a forced-drain command and told almost nobody. With the door latched, press and hold Start/Reset for roughly three seconds; the display acknowledges and the drain pump runs for a minute or two, pumping the tub out regardless of where the cycle died. Older machines label the same function Cancel-Drain across two buttons. This is always the first move — it costs nothing, it empties the tub so you can work, and whether it succeeds or fails is itself diagnostic: a successful forced drain means the earlier cycle fault was upstream; a failed one means the drain path below is blocked.
The Filter Comes First
Bosch's cylindrical filter sits in the tub floor and twists out in a quarter turn — and because Bosch dishwashers famously lack a food grinder (it's part of how they stay so quiet), the filter does all the catching. A season of neglect mats it with grease and seed husks until water simply can't reach the pump fast enough, producing slow drains, gritty glasses, and eventually an E24. Twist it out, rinse it under hot water with a soft brush, scoop any debris from the sump beneath, and reseat it until it clicks. Monthly is the right rhythm in a busy kitchen.
“Bosch traded the grinder for silence — which makes the filter a maintenance item, not an accessory. Most E24s are a cleaning, not a repair.”
Field note — The Technician Team
E25 and the Impeller Cover
Beneath the filter, under a small round cover, lives the drain pump's impeller — and E25 is Bosch's way of saying something is stopping it. The classic finds: a shard of a broken wine glass, an olive pit, a fruit-sticker wad, once a whole birthday-candle holder. With the tub drained and the filter out, the cover unclips (some models secure it with a single screw) and the impeller should spin freely with a fingertip. Clear what you find and the code usually clears with it. An impeller that's free while the pump only hums means the pump motor itself has failed — a compact, stocked part that our dishwasher repair technicians replace the same day.
Hoses, High Loops, and Air Gaps
When the machine itself checks out, the installation takes its turn. The drain hose must rise in a high loop under the counter before dropping to the drain — a hose that runs flat lets sink water siphon back and confuses every drain the machine attempts. A hose crushed by a bin drawer or kinked during a recent countertop project produces a textbook E24. And on installations with an air gap (the chrome cylinder by the faucet), the cap pops off for cleaning — a surprising amount of Sherwood Park's standing-water calls end right there. Getting the plumbing geometry right is half of what a proper dishwasher installation is for.
Bosch Drain Questions
How do I force my Bosch dishwasher to drain?
Close the door and press and hold the Start/Reset button for about three seconds — the display changes and the machine runs a cancel-and-drain sequence for a minute or two. On older models the button may be labelled Cancel-Drain outright. If water remains in the tub after the sequence finishes, the drain path is blocked and the machine needs the filter, impeller cover, and hose checked in that order.
Why does my Bosch dishwasher keep showing E24?
E24 means the water’s exit route is restricted. The repeat offenders: a filter overdue for cleaning, a drain hose kinked behind the machine or looped incorrectly into the sink drain, and a plugged air gap on installations that have one. If E24 returns after you’ve cleaned the filter and confirmed the hose runs freely, the blockage is deeper — often at the pump inlet — and that’s a technician visit.
Is it worth fixing a Bosch dishwasher?
Almost always yes. Bosch dishwashers are premium machines designed for service — the tub, racks, and wash system routinely outlast two budget dishwashers, and Canadian parts support is excellent. A drain pump or even a heat pump replacement costs a fraction of an equivalent new 800-series machine. We quote flat-rate in writing before touching anything, so the repair-or-replace call is yours to make with real numbers.