- Clean or service the related filter, tray, or maintenance part according to the product guidance.
- Reinstall all parts correctly and make sure nothing is left loose or blocked.
- Reset the reminder or rerun the appliance to confirm the code clears.
Display message indicating the metal grease filter is saturated. On the Bosch HCP30E52UC, this code relates to the extractor hood and should be interpreted together with how the appliance is behaving right now.
- The extractor hood displays CLEAN GREASE FILTER instead of normal status information.
- The current cycle, function, or startup sequence may stop, pause, or behave differently than expected.
- The same code may return after a reset if the underlying issue is still present.
- A maintenance interval was reached or the appliance detected restricted flow through a filter or service part.
- The maintenance task was only partly completed or the reminder was not reset afterwards.
- Check for trapped debris, limescale, or poor fitment around the serviced part.
- Confirm the correct filter or maintenance part is fitted for your model.
- If the same code returns immediately, the issue may be beyond routine maintenance.
- Do not reset maintenance reminders before the cleaning or service task is actually complete.
Book service if CLEAN GREASE FILTER returns immediately after correct maintenance, because the extractor hood may have a deeper blockage or component fault.
Can CLEAN GREASE FILTER clear after a reset?
Sometimes a temporary glitch clears after one full reset, but a repeated return usually means the same underlying issue is still there.
Should I keep using the appliance if it works again briefly?
Only if the code stays away and the appliance behaves normally. If the same code comes back, stop and move to service or more targeted diagnosis.