Samsung dishwasher

Samsung 4E error code: water supply error

The dishwasher is not filling.

DIY: easyTypical repair: £70–£140.

Likely causes

Tap closed
Blocked inlet filter
Faulty inlet valve

How to fix 4E

Unplug the dishwasher (or switch off at the wall) for 5–10 minutes to clear any temporary fault, then restart it.
Check the tap and inlet.
Run a short test cycle. If 4E returns, the fault is still there and an engineer should look at it.

Always switch off and unplug the appliance before inspecting it. Never work on gas appliances or fixed electrical wiring yourself — call a Gas Safe registered engineer or a qualified electrician.

Full fault guide

Dishwasher not filling with waterDetailed causes, DIY steps and costs

Other Samsung dishwasher error codes

Samsung dishwasher repair near you

Frequently asked questions

What does Samsung error code 4E mean?

The dishwasher is not filling. On a Samsung dishwasher, 4E is shown as "water supply error".

How do I clear the 4E error on a Samsung dishwasher?

Switch the appliance off at the wall for 5–10 minutes, then restart. If 4E comes back, work through the checks on this page — the fault is real and needs fixing, not just resetting.

How much does it cost to fix Samsung 4E?

£70–£140. is typical, depending on the part. Simple blockages cost nothing to clear yourself.

Does 4E mean the same on every Samsung model?

Not always. Codes are broadly consistent within a brand, but model ranges differ. Check your manual if the symptoms below don’t match.