- Appliances
- Ovens
C1
AEG C1 on oven: telescopic rails fitted during pyro cleaning
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
On AEG pyrolytic ovens, C1 to C4 mean pyro cleaning cannot start: C1 for telescopic rails left in, C2 for the food sensor plugged in, C3 for an open door and C4 for the Plus Steam or Steam Bake button being on. Correct that point and start the pyro clean again.
Safety first
Stop and check this first
- Wait for the oven to cool before lifting out rails and side supports, as the cavity stays very hot for a long time after cooking or a pyro clean.
- Keep telescopic rails, shelves and the food sensor out of the pyrolytic cycle; AEG asks for all of them to be removed before the setting is activated.
Safe checks you can perform
- Empty the cavity before pyro clean (C1)
- Unplug the food sensor (C2)
- Close the door fully (C3)
- Turn the steam button off (C4)
Leave these tasks to a qualified professional
- Do not attempt this professional task: Door and accessory detection check
- Do not attempt this professional task: Check pyrolytic cycle
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Door and accessory detection check
What they doIf the oven shows C1 or C3 with an empty cavity and a closed door, an authorised AEG engineer checks how the oven detects the door and the rails before pyrolysis.
They must show youthe door switch state in service mode with the door open and closed.
In writingthe code shown, what was measured on the door switch, any part replaced and the result.
Check pyrolytic cycle
What they doAfter the work, the engineer runs a pyro clean with the oven prepared and confirms it starts, locks the door and progresses with no C1 to C4 code.
They must show youthe pyro clean running with the door locked and no code on the display.
In writingthe cycle run, whether it completed without a code and the date.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Empty the cavity before pyro clean (C1)
- Who:
- you, with the oven cold.
- How:
- take out the telescopic rails, the shelves and the removable side rails. AEG says these can be washed separately with a soft cloth and mild detergent rather than going through the pyrolytic cycle.
- Result that matters:
- a cavity with no rails or accessories inside.
- If parts were still in:
- once removed, the pyro clean should start.
- If the oven was already empty and C1 remains:
- work through the other conditions on this page.
- Evidence to keep:
- a photo of the empty cavity and the code on the display.
Evidence: Oven displays error message C1 C2 C3 C4
Unplug the food sensor (C2)
- Who:
- you.
- How:
- find the probe socket inside the oven; on the models shown by AEG UK it sits at the top right. Pull the food sensor out and keep it outside the oven before selecting pyro clean.
- Result that matters:
- no probe connected when the clean starts.
- If the sensor was plugged in:
- with it removed, select pyro clean again.
- If no sensor was fitted yet C2 shows:
- note the code and carry on with the other checks.
- Evidence to keep:
- a photo of the empty socket.
Evidence: Oven displays error message C1 C2 C3 C4
Close the door fully (C3)
- Who:
- you.
- How:
- push the door until it is fully shut and check nothing such as a tray, a tea towel or a misplaced seal is holding it slightly open. AEG states that pyro clean cannot run with the door open.
- Result that matters:
- a fully closed door before the setting is activated.
- If it was ajar:
- shut it and start the clean again.
- If the door closes properly and C3 still appears:
- arrange a service visit.
- Evidence to keep:
- a short video of closing the door and starting pyro clean.
Evidence: Oven displays error message C1 C2 C3 C4
Turn the steam button off (C4)
- Who:
- you.
- How:
- look for the small light in the Plus Steam or Steam Bake button. If it is lit, press the button again so the light goes out, then select pyro clean.
- Result that matters:
- steam deselected when the pyrolytic treatment is switched on.
- If steam was selected:
- with it off, the pyro clean should begin.
- If every condition is met and the code returns:
- AEG recommends requesting a service engineer.
- Evidence to keep:
- a photo of the panel with the steam button light off.
Evidence: Oven displays error message C1 C2 C3 C4
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- AEG
- Product type
- Ovens
Known code variants
- AEG C4 steam pyro
- AEG C4 vapor pirólisis
- AEG horno C1
- AEG horno error C2 sonda
- AEG oven C1
- AEG oven C3 door pyro clean
- AEG oven error C2 food sensor
- AEG pirólisis C1
- AEG pyrolytic C1
- C0
- C01
- C 1
- C2
- C3
- C4
- error C0 C1 C2 C3 placa Samsung
- Error C1 Junkers
- horno AEG C3 puerta pirólisis
- Junkers C1
- placa inducción Samsung C1
- Samsung C1
- Samsung cooktop C0 C1 C2 C3
- Samsung cooktop error C1
- Samsung hob sensor error C1
- sensor temperatura encimera Samsung
- ZWE C1
What it means
AEG UK's oven support page explains four codes tied to the pyrolytic clean: C1, telescopic rails not removed; C2, the cooking thermometer (food sensor) left in its connector; C3, the door open or slightly open; C4, the Plus Steam or Steam Bake button active when pyro clean is switched on. AEG gives the fix for each and recommends a service visit if the problem persists. The page is general for AEG ovens and your model may lack some of these features. These codes describe a set-up condition and do not by themselves show that anything has broken.
Warnings and stop conditions
- Loweditorial warning
Wait for the oven to cool before lifting out rails and side supports, as the cavity stays very hot for a long time after cooking or a pyro clean.
Evidence: Oven displays error message C1 C2 C3 C4
- Mediumsource verified
Keep telescopic rails, shelves and the food sensor out of the pyrolytic cycle; AEG asks for all of them to be removed before the setting is activated.
Evidence: Oven displays error message C1 C2 C3 C4
Symptoms and causes
Probable causes · in order
- Telescopic rails or accessories left in (C1)Common
AEG asks you to remove the telescopic rails, shelves and removable side rails before running pyro clean; with them in place the oven shows C1.
Evidence: Oven displays error message C1 C2 C3 C4
- Food sensor plugged in (C2)Common
With the cooking thermometer still in its connector during the pyrolytic treatment, the oven refuses to start the clean and shows C2.
Evidence: Oven displays error message C1 C2 C3 C4
- Door open or ajar (C3)Possible
Pyro clean cannot run with the door open or slightly open; AEG says to close it fully before activating the setting.
Evidence: Oven displays error message C1 C2 C3 C4
- Steam button selected (C4)Possible
If the Plus Steam or Steam Bake button is lit when pyro clean is chosen, C4 appears until you press the button again to turn it off.
Evidence: Oven displays error message C1 C2 C3 C4
Virtual technician
Does C1 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
El horno muestra el mensaje de error C1 C2 C3 C4
AEG · 2026 · official_doc
- 2
Oven displays error message C1 C2 C3 C4
AEG · 2026 · official_doc
Was this entry useful?