The E22 error on your Bosch Dishwasher means the machine has detected a blocked filter or restricted drain flow. Cleaning the filter system and drain hose usually clears this fault without needing a repair callout.
| Error code | E22 |
|---|---|
| Meaning | Filter/microfilter blockage or drain flow restriction detected |
| Severity | Low — usually a quick DIY fix, not a component failure |
| Time to fix | 10–25 minutes |
| Tools needed | None, or a soft brush and towel |
What the E22 error means
Bosch dishwashers use sensors to monitor water flow during wash and drain cycles. The E22 code appears when the machine senses that water isn't draining or circulating properly, which is almost always caused by debris trapped in the filter, spray arms, or drain path. This is one of the most common Bosch dishwasher codes and rarely points to a serious mechanical fault.
Left unresolved, a blocked filter can cause poor cleaning results, standing water at the bottom of the tub, or a bad odor. The good news is that most homeowners can clear this themselves in under half an hour.
Common causes
- Food debris, bones, or labels clogging the microfilter or fine filter
- A blocked or kinked drain hose
- Spray arm nozzles clogged with limescale or food particles
- Grease buildup restricting water flow through the filter mesh
- A partially blocked air gap or garbage disposal connection (if fitted)
- Filter not seated or locked correctly after last cleaning
How to fix the E22 error
- Power down and unplug: Switch off the dishwasher and disconnect power before reaching into the tub for safety.
- Remove and inspect the filter: Twist and lift out the coarse and fine filters from the base of the tub. Rinse under running water and clear any trapped debris with a soft brush.
- Check the spray arms: Remove the upper and lower spray arms and clear any blocked holes using a toothpick or thin wire, then rinse under a tap.
- Inspect the drain hose: Check the hose at the back of the machine for kinks or clogs, and clear any buildup at the connection point to the sink or disposal unit.
- Reseat the filter properly: Refit the filter assembly and twist it back into the locked position — a loose filter can trigger the same error again.
- Run a test cycle: Start a short wash cycle to confirm the E22 code has cleared and water is draining normally.
FAQ
Can I keep using the dishwasher with an E22 error showing?
You can, but wash performance will likely suffer and water may not drain fully, so it's best to clear the blockage first.
Why does the E22 code keep coming back after cleaning?
This usually means the filter wasn't locked back into place correctly, or there's still debris further down the drain line that needs clearing.
Do I need a technician for this error?
Most cases resolve with a simple filter and drain hose clean. If the code persists after cleaning everything, it may indicate a faulty drain pump or flow sensor needing professional attention.
