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Zanussi washing machine

Zanussi 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.

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Full fault guide

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Frequently asked questions

What does Zanussi error code E91 mean?

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

How do I clear the E91 error on a Zanussi 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 Zanussi E91?

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

Does E91 mean the same on every Zanussi model?

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