Appliance Repair HubFind · Fix · Decode

AEG washing machine

AEG E91 error code: module communication fault

Related to E90.

Engineer jobTypical repair: £60–£190.

Likely causes

  • Module fault

How to fix E91

  1. Unplug the washing machine (or switch off at the wall) for 5–10 minutes to clear any temporary fault, then restart it.
  2. Power reset; engineer to repair.
  3. Run a short test cycle. If E91 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.

Need E91 fixed?

Free, no obligation. Tell us what's wrong and we'll connect you with a local engineer.

By sending this you agree that we may pass your details to a local engineer so they can contact you about this repair. We never sell your data.

Full fault guide

Other AEG washing machine error codes

AEG washing machine repair near you

AEG washing machine repair

Frequently asked questions

What does AEG error code E91 mean?

Related to E90. On a AEG washing machine, E91 is shown as "module communication fault".

How do I clear the E91 error on a AEG washing machine?

Switch the appliance off at the wall for 5–10 minutes, then restart. If E91 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 AEG E91?

£60–£190. is typical, depending on the part. Simple blockages cost nothing to clear yourself.

Does E91 mean the same on every AEG model?

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