Bosch · Dishwasher

E22

Filter Blocked

Severity

Medium

Your Bosch Dishwasher stopped working and is showing error E22, which corresponds to a fault called "Filter Blocked". This is one of the most searched error codes for this appliance — you are not alone, and there is a clear fix.

Owner's Summary

Your Bosch dishwasher filter is clogged with food debris, causing poor washing performance and triggering E22. Remove the filter, rinse it under running water with a soft brush, and reinstall. This should be done monthly as regular maintenance.

Symptoms

Bosch dishwasher not cleaning properly, poor wash results, E22 displayed

Common Causes

Heavily clogged fine filter mesh
Food debris blocking coarse filter
Accumulated grease in filter housing
Foreign object in sump area

How to Fix

1 Remove all three filter components and clean under running water
2 Use a soft brush to clean the fine mesh filter
3 Soak filters in warm soapy water for 30 minutes if heavily greased
4 Check sump area for broken glass or hard debris
5 Reinstall filters and run a cleaning cycle

Tools You'll Need

Soft Brush Towels / Bucket

These are simple, low-risk fixes most homeowners can do with tools already in a basic toolbox.

Technical Explanation

E22 is generated when the wash pump draws excessive current due to restricted flow through a blocked filter — the PCB detects the current spike via the pump motor shunt and posts E22. Persistent blockage can damage the wash pump impeller.

Is It Safe to Keep Using?

Running with a clogged filter stresses the wash pump motor and can cause premature pump failure. Clean immediately.

Technician's Pro Tip

Bosch recommends cleaning the dishwasher filter monthly. The fine mesh filter is the most critical — it looks clean at first glance but holds a film of grease that blocks water flow significantly. Rub it between your fingers under running water to feel if grease is present.

Related Codes

E1 — Bosch Washing Machine

Water Intake Fault

High

E18 — Bosch Washing Machine

Drain Fault — Water Not Pumping Out

High

E17 — Bosch Washing Machine

Water Intake Too Slow

Medium

Frequently Asked Questions

What does error code E22 mean on a Bosch Dishwasher?

Code E22 on a Bosch Dishwasher indicates "Filter Blocked." In practice, the most common trigger is heavily clogged fine filter mesh. Severity is rated medium, and typical repair costs range from $0 to $60.

Can I fix E22 myself, or do I need a technician?

Many cases of E22 can be resolved without a technician. The first step to try: remove all three filter components and clean under running water. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code E22 showing?

Running with a clogged filter stresses the wash pump motor and can cause premature pump failure. Clean immediately.

How much does it cost to repair E22 on a Bosch Dishwasher?

Repair costs for code E22 typically range from $0 to $60. Filter cleaning: $0 DIY; Filter replacement if damaged: $20–$60. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$0 – $60

Filter cleaning: $0 DIY; Filter replacement if damaged: $20–$60