Dishwasher
E18
The E18 error code on an Electrolux dishwasher means the machine isn’t filling with water fast enough — it’s a moderately common fault that’s often DIY-fixable but can occasionally point to a faulty valve or pressure system.
What does this error mean?
E18 indicates the dishwasher took too long to reach the required water level during a fill cycle. The control board monitors how quickly water enters the tub and triggers E18 when the fill time exceeds its set threshold. This is distinct from a complete no-water fault — the machine is detecting water, just not enough of it, fast enough.
Est. repair cost
£80–£150 professional repair (inlet valve or flow meter); £15–£35 DIY inlet valve part if you’re comfortable with basic appliance repairs
🔍 Likely causes
🛠️ Step-by-step fix
Reset first: Switch the dishwasher off at the mains, wait 60 seconds, then power it back on and run a short cycle. A one-off glitch can trigger E18 and a reset clears it.
Check the water supply tap: Pull the dishwasher out slightly and locate the isolation tap on the inlet pipe (usually under the sink). Ensure it’s fully open — turn anticlockwise until it stops.
Inspect the inlet hose: Check the hose running from the tap to the dishwasher for kinks, tight bends, or crushing. Straighten any kinks and try again.
Clean the inlet filter: Turn off the water supply tap, unscrew the inlet hose from the back of the dishwasher, and pull out the small mesh filter screen with pliers. Rinse it under the tap to remove limescale and debris, then refit securely.
Check your water pressure: Run a cold tap fully — if pressure seems weak throughout your home, contact your water supplier. Low mains pressure is outside your control and may require a pressure booster.
If the fault persists after the above steps, the water inlet solenoid valve or flow meter is likely faulty. These parts require disconnecting the appliance and accessing internal components — stop here and call a professional.
📞 When to call a professional
Call an appliance engineer if the E18 error returns after you’ve cleaned the inlet filter, confirmed the tap is fully open, and checked the hose. Tell them: ‘My Electrolux dishwasher is showing E18 — I’ve cleaned the inlet filter and confirmed water supply is fine, so I suspect the inlet solenoid valve or flow meter.’ This saves diagnostic time and money.
⚖️ Repair or replace?
A water inlet valve replacement typically costs £80–£150 fitted by an engineer; a flow meter repair sits in the same range. If your Electrolux dishwasher is under 5 years old, repair is almost always worthwhile. Over 8 years old with recurring faults, a modern replacement dishwasher from £300–£450 is often better value long-term.