Siemens dishwasher leaking water onto the floor?

If it’s leaking part way through the wash, the first aim is to work out whether it’s overflowing, splashing out, or leaking from a hose/seal underneath. On a Siemens of this age, start with the simple external checks first.

1. **Check the door seal and lower door area** Look for splits, distortion, food debris or grease on the main door seal. Also check the **bottom edge of the door** and the inner lip for damage or heavy build-up. A poor seal can let water escape once the wash pressure increases.

2. **Inspect the spray arms** Remove and check both spray arms for cracks, blocked jets, or if one is loose. A split spray arm can fire water directly at the door and cause leaking onto the floor part way through the cycle.

3. **Check loading** Make sure nothing tall is stopping the spray arm rotating or deflecting water toward the door. Trays, baking sheets and large pans are common causes.

4. **Look at the filters and sump area** Clean the filters thoroughly and check for debris around them. Poor draining or restricted circulation can sometimes contribute to odd leak behaviour.

5. **Run a short cycle and watch carefully** If safe to do so, observe exactly **where** the water appears first: from under the door, one front corner, or from underneath. That helps narrow it down to a seal, spray issue, or internal hose/pump leak.

6. **If the leak is from underneath** Isolate the appliance from the mains before removing any panels or inspecting internal parts. Then check hoses, hose clips, the sump/pump area and inlet valve for drips. If water has collected in the base tray, there may be an internal leak triggering it.

Because it’s only just over a year old, I’d also check whether it’s still covered by the retailer or Siemens warranty. If the leak is internal, or any mains-related work is needed, it’s best handled by a qualified engineer.

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