Bosch Washing Machine Error Code E31 — Overflow Detected
What this means
Error E31 means water has risen above the maximum safe level in the drum. This can be caused by a stuck-open inlet valve, a clogged drain pump or hose, a malfunctioning pressure switch, or excessive suds. The washer activates its overflow protection to prevent flooding.
Step-by-step fix
4 stepsCancel and drain
Press the cancel button and run a spin/drain cycle to remove excess water. Have towels ready.
If the washer won't drain, manually drain through the emergency drain at the bottom front.
Check the drain system
Clean the drain pump filter and inspect the drain hose for blockages.
The drain filter is usually behind a small panel at the bottom front of the washer.
Reduce detergent
Excessive suds can cause false overflow readings. Switch to HE detergent and use the recommended amount.
Use half the detergent amount for soft water areas.
Check the inlet valve
If the washer continues to fill when it should not, the water inlet valve may be stuck open and needs replacement.
When to call a professional
If water continues to overflow despite clear drains and proper detergent use, the inlet valve or pressure switch may need professional replacement.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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