Bosch 800 Series Washer: Problems & Codes

The 800 Series is Bosch's top 24-inch compact front-loader — AquaShield leak protection, a 1400 RPM spin, and Home Connect. It fails in the same compact-washer pattern as the rest of the line, and every fault is well documented. Here is the ranked data, the codes, and the OEM parts.

Models this covers#

• WAW285H2UC
• WAT28402UC
• WGA244AUCA

Spec at a glance#

Ranked failures#

1. E18 drain-pump clog — 25%. Small items get past the coin trap into the pump housing and stall it. Clearing the trap resolves many before a part is needed.
2. E27 door-lock failure — 15%. The interlock stops confirming closed, so the cycle will not start.
3. Rubber door-boot gasket tears at the fold points — 12%. The boot splits and leaks as it ages.
4. E43 motor-control module error — 10%. The drive electronics fault and the drum will not turn.
5. Vibration and walk during high-speed spin — 8%. Tired shock absorbers or leftover shipping bolts at the 1400 RPM spin.

Error codes#

• Error E18 — drain restriction
• Error E27 — door lock
• Error E43 — motor control
• Error E04, Error E02, Error E13, Error E17 — leak, motor, and fill faults

Parts that go#

What to check before you book#

For an E18, open the coin-trap pump filter at the bottom-front service panel and clear whatever has jammed the pump — this alone clears most drain complaints. For E27, confirm nothing is caught in the boot and the door closes flush before assuming the lock has failed. A tearing boot is visible in the lower fold. If the machine walks at spin, confirm the shipping bolts are out and the unit is level. Match the symptom to the ranked list and book with the right part in mind.

Fix or replace?#

The pump, lock, and boot are inexpensive, so fix them while the washer is under about a decade old and the repair stays under half the price of a comparable new machine. The one to weigh on an older unit is an E43 motor-control module, where the board can approach replacement cost.

Upkeep#

• Run the tub-clean cycle monthly with a washing-machine cleaner tablet.
• Wipe the door boot dry after every load — trapped moisture degrades the gasket.
• Clean the coin trap monthly from the bottom-front service panel.
• Leave the door ajar between loads and clean the dispenser quarterly.

Related guides#

• Bosch washer not draining
• Bosch washer leaking
• Bosch washer will not start

Getting the most out of your Bosch 800 Series#

This compact 800 is a tightly engineered machine, and small habits keep it trouble-free. Because its high 1400 RPM spin flings small items straight into the pump, always check pockets before loading — that one step prevents most E18 clogs. Clean the coin trap at the bottom-front service panel monthly, and wipe the door boot dry after every load so trapped moisture does not degrade the gasket over time. Run a monthly tub-clean cycle and dose HE detergent lightly, since a compact European drum needs far less soap than a US top-loader and over-dosing invites leak faults. Leave the door ajar between loads for ventilation. Kept this way, the 800 Series holds its performance for years, and its common faults — pump, lock, boot — stay inexpensive fixes, leaving only the motor-control module as the rare repair worth weighing against replacement.

Recall status#

No active recalls on the Bosch 800 Series as of 2026-05-28. Verify at cpsc.gov.

Book a Bosch 800 Series washer repair at /book — our trucks stock common Bosch parts, upfront pricing.