FixByModel
E18

Bosch E18: Machine could not drain water in time

The washer failed to pump the water out within its allowed time, so it stops with the drum still full. Bosch designs the drain pump filter for owner cleaning, so this is usually a quick DIY fix rather than a service call.

DIY fix

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. Clogged drain pump filter full of lint, hair, coins or small objects (by far the most common)
  2. Kinked, blocked or badly routed drain hose
  3. Blocked sink U-bend, standpipe or waste connection the hose empties into
  4. Object jamming the pump impeller so it cannot spin
  5. Failed drain pump (worn impeller or seized motor)
Where water escapes
1Door gasket
2Hoses & clamps
3Base tray
4Leak sensor

Schematic illustration of a typical washing machine — not your exact model.

Before you start — unplug the appliance and turn off the water supply. You'll be working near water and electrical parts, and drained water can be hot. If a step involves the pump, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Cut power and waterSwitch the washer off, unplug it, and close the water tap before opening anything up.
2Drain it downOpen the service flap at the lower front, pull out the small emergency drain hose, remove its cap and empty the water into a shallow tray.
3Clean the pump filterUnscrew the round filter (usually front-right behind the flap), rinse away debris under warm water, and check for coins or fibres lodged inside.
4Check the impellerWith the filter out, reach in and gently turn the pump impeller by hand to confirm it spins freely and nothing is jamming it.
5Inspect the drain hoseStraighten any kinks in the drain hose and make sure the standpipe or sink waste it connects to is not blocked.
6Refit and testScrew the filter back in fully, restore power, and run a rinse/spin. If E18 (shown as F18 on some models) returns with a clean filter and clear hose, the drain pump likely needs replacing.

Still showing E18?

If you’ve worked through every step and E18 keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

Bosch washing machines. Bosch front-load washers with a digital display; the same drain fault is shown as E18 or F18 depending on the model generation.

FAQ

What does Bosch E18 mean?

Machine could not drain water in time. The washer failed to pump the water out within its allowed time, so it stops with the drum still full. Bosch designs the drain pump filter for owner cleaning, so this is usually a quick DIY fix rather than a service call.

What causes Bosch E18?

The most likely cause is clogged drain pump filter full of lint, hair, coins or small objects (by far the most common). Other causes include Kinked, blocked or badly routed drain hose; Blocked sink U-bend, standpipe or waste connection the hose empties into; Object jamming the pump impeller so it cannot spin; Failed drain pump (worn impeller or seized motor).

Can I fix Bosch E18 myself?

Usually yes. Start by working through the steps above, beginning with: switch the washer off, unplug it, and close the water tap before opening anything up.