Electrolux C04 oven: what it means & what to check

What C04 actually means

The oven won't let you start the pyrolytic cleaning cycle, and instead of running it shows C4 — the control thinks a button is being held down, or it isn't happy with the mains supply it's seeing.

Electrolux use this code in two situations. Most often it appears the moment you select the pyrolytic (self-clean) function: the control board reads the plus steam button as already pressed, so it refuses to arm the cycle. The same code is also logged when the board can't read the mains frequency correctly, which points at the power board itself rather than anything you've done.

What C04 looks like on a Electrolux oven

Most people find this page having searched for what the machine is doing rather than the code itself. On a Electrolux oven, C04 usually shows up as one or more of these:

Oven door won't open
Door won't lock or click shut
Door lock light flashing
Door stuck shut with the load inside
Won't start even with the door closed
No function at all
Dead — nothing lights up
Lights flashing and nothing happening

Recognise any of those? That is this fault, and the rest of this page explains what causes it and what you can check yourself.

What usually causes it

A sticking or dirty touch/press button on the control panel — usually the plus steam button
Grease or cleaning fluid on the control panel confusing the buttons
Control panel electronics reading a false button press
Power board fault, where the mains frequency isn't being read properly

What you can safely check yourself

Work through these in order. Anything beyond this — panels off, testing parts, anything to do with the wiring — is an engineer's job, and not one to attempt with the machine plugged in.

Turn the oven off at the wall for a minute, then switch it back on and try selecting the cleaning cycle again
Wipe the control panel and buttons with a damp cloth and dry them thoroughly — grease around the buttons is a common cause
Press each button on the panel in turn and feel for one that isn't springing back
Make sure the oven door is fully closed and latching before you select pyrolytic cleaning

Common questions about Electrolux C04

What does C04 mean on a Electrolux oven?

The oven won't let you start the pyrolytic cleaning cycle, and instead of running it shows C4 — the control thinks a button is being held down, or it isn't happy with the mains supply it's seeing. Electrolux use this code in two situations. Most often it appears the moment you select the pyrolytic (self-clean) function: the control board reads the plus steam button as already pressed, so it refuses to arm the cycle. The same code is also logged when the board can't read the mains frequency correctly, which points at the power board itself rather than anything you've done.

Can I fix Electrolux C04 myself?

There are 4 checks you can safely do yourself first.

Turn the oven off at the wall for a minute, then switch it back on and try selecting the cleaning cycle again.
Wipe the control panel and buttons with a damp cloth and dry them thoroughly — grease around the buttons is a common cause.
Press each button on the panel in turn and feel for one that isn't springing back.
Make sure the oven door is fully closed and latching before you select pyrolytic cleaning.

This one usually needs an engineer once you have tried them.

How much does it cost to repair Electrolux C04?

£66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Tried the checks and it's still showing C04?

This one usually needs an engineer once you have tried the checks above. Then it wants someone who can open it up.

What it costs, before you call: the price is the same whatever the fault turns out to be — £66 including VAT for an engineer to come out and diagnose it, or £84 in total including VAT if it is put right on the visit and no parts are needed. Any parts needed are quoted on site before we fit them — you decide. Every repair carries a 90-day workmanship guarantee.

Our own engineers, not a call centre. We cover Nottinghamshire, Derbyshire and Leicestershire — most oven faults are seen same day or next day.

Call 0115 648 0929 Book online — postcode and number is all we need

Outside our area? The explanation above still stands — take it to a local engineer and tell them the code. Knowing it saves them time and you money.

Other Electrolux oven codes

All Electrolux fault codes and repairs →

What this looks like when it happens

electric cooker not working

Repairs we cover near you

Written by the engineers at ASAP Repairs, 0115 648 0929. We repair these machines for a living in Nottinghamshire, Derbyshire and Leicestershire.

Electrolux C04 error — oven