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Source-backed error-code guide

Reviewed

Bosch Dishwasher E22 / E-22 Error Code

Bosch says E22 can be caused by a blocked dishwasher filter and may also involve the drain pump cover, drain hose, air gap, or drain hose debris.

Applies to Bosch dishwasher

What the appliance detected

Detected condition

The dishwasher reports that the filter or drain path may be blocked.

What may contribute

Possible causes

  • The dishwasher filter may be blocked.
  • The drain pump cover may be loose or debris may be present in an accessible drain area.
  • The drain hose, air gap, or drain connection may be restricted.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the Bosch dishwasher display

    • Photograph or write down the exact code or flashing-light pattern before clearing it.
    • Confirm the full model number and owner manual because Bosch dishwasher codes vary by series and control platform.

  2. Use only documented homeowner checks

    • Remove and wash the filter under running water with mild soap and a soft brush if the model manual supports that maintenance.
    • Check the visible drain hose for kinks.
    • Check only accessible air-gap or drain-hose debris steps that the manual allows, with power off before wet-area work.

  3. Stop before internal dishwasher work

    • If the code remains or returns after documented checks, request Bosch support or qualified service.
    • Do not test live components, access control boards, bypass leak protection, or disassemble pumps or heaters beyond model-manual maintenance.

Actions not recommended

  • Do not reach into wet areas while the dishwasher has power.
  • Do not test live voltage or open internal electrical areas.
  • Do not treat an error code as proof that one specific internal component failed.

When to stop and request service

  • E22 remains after filter and accessible drain checks.
  • The pump cover or drain area cannot be reached safely or as documented.
  • Internal pump, wiring, or plumbing diagnosis would be needed.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: August 18, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Bosch.

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