Bosch Washer Error F18

How to Fix F18 Error (Step-by-Step) Unplug the washer from the power outlet for safety and confirm the error stays cleared during a full test cycle.Locate the small service door on the bottom front of the washer, and place a shallow pan and a towel in front of it to catch any residual water.Open the service door and slowly unscrew the pump filter cap, allowing the water to drain into the pan. Be prepared for up to a gallon of water.Once drained, completely remove the filter and clean it of any debris like lint, coins, or buttons. Also, check the filter housing for any obstructions.Reinsert the clean filter and tighten the cap securely. Restore power to the washer and run a short drain or spin cycle to check for leaks and see if the error is cleared.If the error persists after cleaning the filter, the drain hose behind the washer may be kinked or clogged. Carefully pull the washer away from the wall to inspect and straighten the hose. Disconnect it from the drainpipe to check for and clear any blockages.If the filter and hose are clear and the problem continues, the drain pump itself may have failed and will likely need to be replaced.Turn the appliance off, wait about 2 minutes, then turn it back on.

What to Check Next on This Bosch Washer Bosch Washer Error F18: Use the code or symbol as the starting clue, then confirm the actual symptom before ordering parts. Unplug the washer before touching wiring, the lock, the pump area, or the control panel. Check the door lock, drain filter, inlet supply, and visible harness connections before replacing controls. If the code returns during the same part of the cycle, match the repair path to that stage: fill, wash, drain, spin, lock, or control response. If the issue returns after these checks, match replacement parts to the complete Bosch model number from the appliance tag. The same code can point to different components depending on the exact model and when the failure appears. Parts Availability Note: For this Electrolux/Frigidaire error code, exact OEM part numbers can vary by model revision and serial range. We’ve listed the most likely component(s), but confirm compatibility using your full model number before ordering. If no exact SKU is shown, use this guide for diagnosis first, then verify the matching OEM part on RepairClinic or PartSelect. Recommended Parts to Check No exact official OEM part number is listed here because the correct Bosch washer part can vary by complete model number. These are targeted part-category searches, not universal fit claims. Bosch washer electronic control board Common replacement category: Main control board Fit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for control and communication faults after wiring and connector checks. Search Amazon for Bosch washer electronic control board Bosch washer user interface control panel Common replacement category: User interface / display board Fit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for display, button, selector, or cycle-control faults. Search Amazon for Bosch washer user interface control panel Bosch washer drain pump assembly Common replacement category: Drain pump Fit note: Exact OEM part number varies by full Bosch washer model number. Confirm compatibility before buying. Confidence: MediumThis category can be relevant for drain, no-spin, and water-removal symptoms after filter and hose checks. Search Amazon for Bosch washer drain pump assembly Before ordering: match the part to the complete Bosch washer model number on the appliance tag. Still Not Working? If the replacement part didn't fix the issue, you may have a wiring problem or main board failure.