WAT28400UC Error Codes — Bosch Washing Machine
🏷️ Model: WAT28400UC 📅 Production: 2016–2022 🫧 Type: Washing Machine
24-inch compact front-loader, ubiquitous in condos. E18 (drain) and E17 (inlet) are the dominant codes; the drain pump filter is behind the lower right panel.
Most Common Codes on the WAT28400UC
All Other Bosch Washing Machine Codes
The WAT28400UC can also display any of the standard Bosch washing machine codes:
E04 Anti-flood device activated — water detected in base F01 Water intake timeout — machine failed to fill within the expected time F02 Heating timeout — water did not reach the target temperature F03 Drain timeout — water did not drain within the expected time F04 Motor fault — drive motor not running correctly F16 Door not closed — door not shut or door lock not engaging F21 Motor fault — drum not spinning or motor running abnormally F23 Leak sensor activated — AquaStop or flood-protection sensor triggered F43 Drum not turning — motor jammed, worn brushes, or motor fault
💡 Tip: Your model's serial sticker (door frame, rim, or back panel) confirms the exact
model number. Codes can differ between revisions of the same model line — if a code on your display
isn't listed here, check the
full Bosch washing machine code list.