Bosch Dishwasher E24 — What It Means & How to Fix It
The dishwasher can't drain properly — start with the filter, then the drain hose path, and don't skip checking that the drain pump cover is seated.
What this code means
E24 is Bosch's drain error: water didn't leave the tub the way the cycle expected. A blocked filter is the everyday cause, with the drain hose (kinked under the unit or clogged at the sink connection) next in line. Its sibling E25 points more specifically at the drain pump itself.
E24 and E25 are adjacent drain faults and owners see them interchangeably across cycles. The checks below cover both ends; the E25 page adds the pump-specific detail.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Filter assembly clogged with food debris | Very common | Yes — twist out, rinse |
| Drain hose kinked or blocked, especially at the sink/disposal end | Common | Partly — visible sections |
| Drain pump cover unseated after a previous clean | Occasional | Yes — click it home |
| Check valve or drain pump fault | Less common | No — technician job |
What you can try yourself
- Remove the bottom rack, twist out the cylindrical filter, rinse it thoroughly, and check the sump opening for debris.
- While the filter is out, look at the drain pump cover in the sump floor (Bosch designs it owner-accessible): it should sit flush and locked — refit until it clicks if it's loose.
- Under the sink, inspect the drain hose for kinks and clear buildup where it meets the disposal or drain tee.
- Confirm the hose rises in a high loop before its connection — a sagged loop drains poorly and siphons.
- Refit everything and run a short cycle, cancelling partway to force a drain and confirm the tub empties.
When to call a technician
- Water still stands with the filter, cover, and hose path all verified — pump or check valve territory.
- The pump hums without moving water, or grinds.
- Sink-side backups during the drain phase, which implicate household plumbing instead.
Typical professional repair cost: Drain pump replacement on Bosch dishwashers typically runs $150–$300 including labor.
Frequently asked questions
I cleaned the filter and E24 still shows — what did I miss?
Most often the drain pump cover: it pops loose during filter cleaning and a half-seated cover lets the pump churn without pumping. Press it back until it clicks. After that, the hose connection at the sink end is the next concentration point for gunk.
How often should a Bosch filter be cleaned?
Monthly is the comfortable rhythm for most kitchens — more if you skip pre-scraping. Bosch filters twist out in seconds, which is the manufacturer politely telling you they expect it done regularly.
Can E24 appear right after a new garbage disposal?
Yes — if the disposal's dishwasher inlet knockout plug wasn't removed, the drain path is a dead end and E24 (or E25) appears on the first run. With the disposal unplugged, the plug knocks inward with a screwdriver.
Related Bosch codes
- Bosch Dishwasher E15 Water reached the base pan under the tub and Bosch's leak protection locked the machine — sometimes a genuine leak, often a one-off spill or condensation that clears once the base dries.
- Bosch Dishwasher E25 The drain pump itself is blocked or its cover is loose — and Bosch makes the pump cover owner-accessible, so this is one of the most fixable codes the brand throws.
- Bosch Dishwasher E09 The heating system isn't raising the water temperature — beyond one reset, the flow-through heater is a mains-voltage part that belongs to a technician.
- Bosch Dishwasher E14 The flow meter that counts water into the machine stopped making sense, so filling can't be trusted — a reset and supply check first, then it's a sensor-level repair.
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