Washing Machine
E91
The E91 error code on an Electrolux washing machine signals a communication failure between the main control board and the user interface (display panel). It’s a moderately serious fault — the machine will typically stop working until the issue is resolved.
What does this error mean?
E91 means the main PCB (printed circuit board) and the front display/control panel have lost communication with each other. The machine’s two electronic ‘brains’ are no longer talking, so it cannot safely accept or carry out your commands. This is usually an electrical connection issue rather than a full board failure, so it’s worth investigating before spending money on parts.
Est. repair cost
£80–£150 professional repair; £20–£60 DIY user interface panel replacement
🔍 Likely causes
🛠️ Step-by-step fix
Power cycle the machine: switch it off at the wall socket, wait 5 minutes, then turn it back on. This clears temporary firmware glitches and costs nothing to try.
Check your home’s consumer unit (fuse box) for a tripped RCD or breaker on the circuit. Reset it if tripped, then restart the machine.
Inspect the door seal and drum area for signs of water leaking towards the control panel. If water has reached the electronics, stop and call an engineer — do not power the machine on again until it’s been checked.
If you’re comfortable removing the top or back panel (unplug the machine first — always), visually inspect the wiring harness running between the main PCB and the display panel for obvious damage, burns, or disconnected plugs. Firmly reseat any loose connectors.
If the wiring looks intact and the error persists, the user interface panel is the next most likely culprit. Replacement panels for common Electrolux models cost £20–£60 online — search using your full model number (printed inside the door). Fitting is generally a plug-and-swap job.
If replacing the user interface panel does not clear the fault, the main PCB may need replacing or professional diagnosis — this is the point to call an engineer.
📞 When to call a professional
Call a qualified appliance engineer if the wiring harness appears burnt, if there are signs of water damage near the PCB, or if replacing the user interface panel doesn’t fix the fault. When you call, tell them: ‘My Electrolux washing machine is displaying error code E91 — it’s a communication fault between the main PCB and the user interface panel.’ This helps them bring the right parts.
⚖️ Repair or replace?
A professional repair for an E91 fault typically costs £80–£150 depending on whether the engineer replaces the UI panel, the wiring loom, or the main PCB. If your machine is under 5 years old, repair is almost always worthwhile. If it’s 8 years or older and the main PCB needs replacing (parts alone can be £80–£120), weigh the repair cost against a new mid-range machine at £350–£500 — replacement may make more financial sense.