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Dishes come out dirty, gritty, or with food residue. A clogged micro filter restricts water flow to the spray arms, resulting in poor wash performance. Replacing the filter restores full circulation pressure.
Bosch dishwashers display the E22 error code when the micro filter is blocked or severely clogged. If cleaning alone does not clear the error or the mesh is torn, filter replacement is required.
A damaged or heavily blocked micro filter can impede normal drainage, leaving standing water at the bottom of the tub after a cycle. Replacing the filter helps restore proper drain flow.
When the micro filter is severely clogged, the circulation pump works harder and may emit a laboring hum or grinding noise. Installing a new filter reduces pump strain and eliminates noise caused by restricted flow.
💡 Pro Tip: Is Your Micro Filter the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Dishes come out dirty, gritty, or with food residue after a full cycle
⚠️ Bosch dishwasher displays error code E22 (filter blocked)
⚠️ Dishwasher has poor drainage or standing water at the bottom of the tub
⚠️ Unusual humming or laboring sound from the pump area during wash cycles
🔍 Technician Tip: Pull out the bottom rack and inspect the filter at the center of the tub floor. If you cannot clean off the fine mesh with warm water and a soft brush — or if the mesh is torn — replacement is the correct fix. On Bosch dishwashers, the E22 error code specifically flags a blocked micro filter; clearing the code without replacing a damaged filter will cause it to return.
📦 What's in the Box
✅ 1× Dishwasher Micro Pump Filter (replaces Bosch 00645038)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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