The E22 error on your Siemens Dishwasher means the filter system is blocked or the drain pump has detected a restriction. This prevents proper drainage and stops the dishwasher mid-cycle to avoid overflow or water damage.
| Error code | E22 |
|---|---|
| Meaning | Filter blockage or drain pump obstruction detected |
| Severity | Medium — dishwasher will not operate until resolved |
| Time to fix | 15–30 minutes |
| Tools needed | Towels, bowl, soft brush, torch (optional) |
What the E22 error means
The E22 error code indicates that your Siemens dishwasher has detected a blockage in the filter system or drain area. The appliance uses sensors to monitor water flow through the drainage system, and when water cannot pass freely through the filters, the error triggers to prevent flooding or damage to the pump. This is a safety feature that stops the wash cycle immediately when restricted water flow is detected.
Common causes
- Food debris, glass fragments, or broken crockery blocking the main filter or micro-filter
- Build-up of grease, limescale, or detergent residue restricting water flow through the filter assembly
- Incorrectly installed or improperly seated filter after previous cleaning
- Foreign objects such as labels, toothpicks, or fruit stickers trapped in the filter housing
- Blocked drain pump impeller behind the filter preventing water from exiting
- Collapsed or kinked drain hose reducing drainage capacity
How to fix the E22 error
- Switch off and remove standing water Turn off the dishwasher at the mains and open the door carefully. Use towels and a shallow bowl to scoop out any standing water from the bottom of the tub before proceeding with filter access.
- Remove and clean the filter assembly Unscrew the cylindrical filter (turn anticlockwise) and lift out the flat micro-filter beneath it. Rinse both thoroughly under hot running water, using a soft brush to remove stubborn debris, grease, and food particles from all mesh surfaces.
- Check the filter housing and pump area With the filters removed, inspect the circular opening in the dishwasher base. Remove any visible debris, broken glass, or foreign objects. Check the drain pump impeller by gently rotating it with your finger to ensure it moves freely and is not jammed.
- Reinstall filters correctly Place the flat micro-filter back first, ensuring it sits completely flat. Insert the cylindrical filter and turn clockwise until it locks firmly in place. An incorrectly seated filter will trigger the E22 error even if clean.
- Inspect the drain hose Pull the dishwasher out slightly and check the drain hose at the back for kinks, twists, or blockages. Ensure the hose has a slight upward loop before connecting to your sink waste or standpipe to prevent backflow.
- Run a test cycle Switch the dishwasher back on and run a short rinse cycle without dishes. Monitor for proper drainage and confirm the E22 error has cleared. If the error persists after thorough cleaning, the drain pump may require professional inspection.
FAQ
How often should I clean my Siemens dishwasher filter to prevent E22 errors?
Clean your dishwasher filter every two to four weeks depending on usage. If you regularly wash heavily soiled dishes or notice food residue after cycles, increase cleaning frequency to weekly. Always scrape large food particles into the bin before loading dishes to reduce filter blockages.
Can I use the dishwasher if the E22 error appears during a cycle?
No, you should not continue using the dishwasher when the E22 error displays. The appliance has detected a drainage issue that could cause water to back up or damage the pump. Switch off the machine, clear the blockage, and only restart once the filter system is properly cleaned and reinstalled.
What if the E22 error returns immediately after cleaning the filters?
If the error reappears despite thorough filter cleaning, check for a faulty drain pump, damaged pump impeller, or a blockage deeper in the drainage system beyond the filter area. You may also have a defective water level sensor giving false readings. These issues typically require a qualified appliance engineer to diagnose and repair safely.
