FixByModel
E22

Bosch E22: Filter blocked, water cannot drain

The dishwasher reports its filter is blocked so wash water cannot flow out to the drain. It is closely related to E24 and is usually cleared by cleaning the filter.

DIY fix

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

Most likely causes

  1. Dirty or clogged tub filter (most common)
  2. Food debris or grease buildup in the sump
  3. Filter reinstalled incorrectly or not locked in place
  4. Blockage further down in the drain hose or drain pump
The drain path — check in this order
1Tub
2Filter / sump
3Drain pump
4Drain hose
5Disposer / standpipe

Schematic illustration of a typical dishwasher — 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

1Remove the filterLift out the lower rack and unlock the filter assembly from the floor of the tub.
2Wash it cleanRinse the filter under running water with mild soap and a soft brush to remove trapped food and grease, then rinse fully.
3Clear the sumpWipe out any debris sitting in the sump opening before refitting the filter.
4Refit and lockReinsert the filter and turn it until it locks; a loose filter can retrigger the code.
5Run a test cycleStart a short cycle to confirm water drains. If E22 persists, inspect the drain hose and pump for a deeper blockage.

Still showing E22?

If you’ve worked through every step and E22 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 dishwashers. Bosch dishwashers with digital fault display across current Ascenta/100/300/500/800 series and EU Serie models.

FAQ

What does Bosch E22 mean?

Filter blocked, water cannot drain. The dishwasher reports its filter is blocked so wash water cannot flow out to the drain. It is closely related to E24 and is usually cleared by cleaning the filter.

What causes Bosch E22?

The most likely cause is dirty or clogged tub filter (most common). Other causes include Food debris or grease buildup in the sump; Filter reinstalled incorrectly or not locked in place; Blockage further down in the drain hose or drain pump.

Can I fix Bosch E22 myself?

Usually yes. Start by working through the steps above, beginning with: lift out the lower rack and unlock the filter assembly from the floor of the tub.