Bosch Washer Error F42

How to Fix F42 Error (Step-by-Step) Unplug the washer from the wall outlet and turn off both hot and cold water supply valves to ensure safety.Remove the rear access panel of the washer, which is typically held in place by several screws. Set the panel and screws aside in a safe place.Locate the motor control board, which is a small electronic board mounted on or near the main drive motor at the bottom of the washer. Take a clear photo of the wire connections before proceeding.Carefully disconnect all wire harnesses attached to the motor control board. Most connectors have a small locking tab that needs to be pressed to release the plug.Unscrew the mounting screws or release the plastic clips holding the old motor control board in place and gently remove it from the washer.Mount the new motor control board in the same position, securing it with the original screws or clips. Reconnect the wire harnesses to the new board, using the photo you took earlier as a guide to ensure correct placement.Turn the appliance off, wait about 2 minutes, then turn it back on.

What to Check Next on This Bosch Washer Bosch Washer Error F42: 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.