Washing Machine
E35
The E35 error code on an AEG washing machine indicates a water overfill — the drum has detected more water than it should hold. It’s a moderately serious fault that will stop your wash cycle and needs attention before running the machine again.
What does this error mean?
AEG washing machines use a pressure sensor (also called a pressure switch or pressostat) to monitor the water level inside the drum. When the machine detects that water has risen above the maximum safe level, it triggers the E35 code and cuts the cycle to prevent a flood. This is a protective fault — the machine is working as intended, but something in the water intake or sensing system has gone wrong.
Est. repair cost
£80–£130 professional repair (pressure switch or inlet valve); £15–£35 DIY inlet valve part if comfortable with basic plumbing
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Reset the machine: Turn the washing machine off at the mains, wait 2 minutes, then switch it back on. If E35 clears and the drum drains normally, run a short empty cycle to confirm. Sometimes a one-off pressure spike causes a false trigger.
Step 2 — Check for excessive suds: If you can see foam in the drum or dispenser drawer, you’ve likely used too much or the wrong detergent. Run an empty rinse-and-spin cycle, and switch to a low-foam HE detergent going forward.
Step 3 — Inspect the pressure hose: Pull the machine out from the wall and remove the top panel (usually two screws at the back). Locate the thin rubber or plastic hose running from the drum base up to the pressure switch on the side panel. Check it for kinks, cracks, or blockages. Blow through it gently — it should be clear. Reattach any loose connections.
Step 4 — Clean the pressure chamber: The small plastic pot where the pressure hose meets the drum base can be unclipped and rinsed under warm water to remove detergent build-up. Reattach firmly.
Step 5 — Test the water inlet valve: After a wash cycle, check whether water is still dripping into the drum when the machine is off and the door is locked. If it is, the inlet valve is not closing and needs replacing. A compatible replacement valve typically costs £15–£35 online — fitting requires disconnecting water supply and two hose clips.
Step 6 — If the fault persists after all the above, stop DIY work. The pressure switch or control board will need professional diagnosis — these involve electrical components and are not safely testable without specialist tools.
📞 When to call a professional
Call an appliance engineer if the E35 error returns after you’ve checked the pressure hose, cleaned the chamber, and ruled out suds — this points to a failed pressure switch or PCB, both of which require safe electrical testing. Tell the engineer: ‘My AEG washing machine is showing E35 — I’ve checked the pressure hose and it’s clear, but the fault keeps returning.’ Expect a call-out and diagnostic fee before any parts are quoted.
⚖️ Repair or replace?
A pressure switch replacement typically costs £80–£130 all-in with a UK engineer; a new inlet valve is similar. If your AEG machine is under 5 years old, repair is almost always worth it. If it’s over 8–10 years old and you’re facing a PCB replacement (£150–£250+), a new mid-range AEG or comparable machine (£400–£600) is likely the better investment.