Air Fryer
E1
The E1 error code on a Tefal air fryer is a temperature sensor fault — the appliance is telling you it can’t read the internal heat correctly, so it shuts down as a safety measure. In most cases this is a fixable problem, and it doesn’t automatically mean your air fryer is headed for the bin. In this guide, you’ll learn exactly what triggers the E1 code, what you can safely check and do yourself at home, and when it’s time to call in a professional or consider a replacement.
What does this error mean?
The E1 error code on Tefal air fryers (including popular models in the Easy Fry, Actifry, and Genius XL ranges) indicates a fault with the NTC temperature sensor — the small electronic probe inside the cooking chamber that continuously monitors the internal temperature during operation. When the appliance’s control board sends a signal to this sensor and receives a reading that is outside its expected range (either no signal at all, a short circuit, or a wildly inaccurate temperature value), it triggers the E1 fault and cuts power to the heating element as a precaution. Think of it like a car engine warning light: the car isn’t necessarily destroyed, but it’s refusing to run until it knows the temperature is being managed safely. The E1 code is essentially the air fryer saying, ‘I can’t confirm what temperature I’m running at, and I’m not willing to keep heating until that’s sorted.’
Est. repair cost
£8–£20 for a DIY NTC sensor replacement; £50–£90 for a professional repair (sensor or wiring); up to £80–£130 if the control board requires replacement
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Unplug the air fryer and let it cool completely. Never attempt any inspection or cleaning while the appliance is plugged in or still warm. Wait at least 30 minutes after use before proceeding.
Step 2 — Perform a hard reset. Once cooled, plug the unit back in, then hold the power button for 5–10 seconds (refer to your specific model’s manual for the exact reset procedure). Some Tefal models require you to unplug for a full 10 minutes before the error clears. This resolves temporary electronic glitches and is always worth trying first.
Step 3 — Check the basket is properly seated. Remove the basket and drawer completely, then reinsert them firmly until you hear or feel them click into place. An improperly seated basket can prevent correct sensor contact on certain Tefal models and trigger fault codes.
Step 4 — Inspect and clean the cooking chamber and sensor area. With the unit unplugged and cool, remove the basket and use a soft damp cloth or a soft brush to carefully clean the interior of the cooking chamber, paying particular attention to the area around the temperature sensor probe (usually a small metal or ceramic-tipped pin near the heating element at the top of the chamber). Remove any visible grease build-up. Do not use abrasive cloths or spray water directly inside the unit.
Step 5 — Check that the air vents are not blocked. Examine the vents at the rear and sides of the appliance. Make sure the fryer is positioned at least 10–15 cm away from walls, cabinets, and other appliances on all sides. Blocked vents are a surprisingly common cause of thermal faults on Tefal air fryers.
Step 6 — Try a test cook after cleaning and repositioning. Plug the unit back in, set a short cook cycle (e.g. 5 minutes at 180°C), and observe whether the E1 code returns. If it completes without the error, the fault was likely caused by debris or a blocked vent.
Step 7 — If the error persists, check whether your model is still under warranty. Tefal UK typically offers a 2-year manufacturer’s guarantee on air fryers. If your appliance is within this period, contact Tefal UK customer support directly (0345 602 1454) before attempting any further steps, as DIY repair may void your remaining warranty.
Step 8 — Consider replacing the NTC temperature sensor yourself (out-of-warranty models only). Replacement NTC sensors compatible with Tefal air fryer models are available from UK spare parts suppliers such as eSpares, 4ourhouse, or eBay, typically costing £8–£20. However, accessing the sensor requires partially disassembling the appliance’s inner housing — only proceed if you are confident with basic electronics, you have the correct screwdrivers (usually Torx or Philips), and you have confirmed the exact part number for your model. If you are not comfortable with this, skip to Step 9.
Step 9 — If the error code returns after cleaning, a reset, and checking the vents — and your appliance is out of warranty — it is time to call a professional appliance repair technician or contact Tefal’s authorised service network. Do not attempt to access the control board or wiring yourself, as this involves live electrical components and risks electric shock or permanent damage to the appliance.
📞 When to call a professional
You should stop DIY attempts and call a professional repair technician if: the E1 error returns immediately after every reset; cleaning and repositioning the appliance has made no difference; you suspect the fault lies with the wiring, the control board, or the heating element (rather than the sensor itself); or you are not comfortable disassembling the appliance to access the sensor. When you call, tell the technician: ‘My Tefal air fryer is displaying an E1 error code, which I understand relates to the temperature sensor. I’ve tried a hard reset, cleaned the interior, and ensured the vents are clear, but the fault persists.’ Providing your model number (found on the base of the unit) will help them source the correct parts before they visit. For Tefal warranty repairs in the UK, call Tefal UK on 0345 602 1454 or use their online repair booking service at tefal.co.uk.
⚖️ Repair or replace?
For a Tefal air fryer displaying E1, the repair-or-replace decision comes down to the age of the appliance and the root cause of the fault. If the issue is simply the NTC temperature sensor — the most common cause — a DIY repair using a replacement part costs around £8–£20 and is a reasonable fix on any model less than 5 years old. A professional repair, including labour, typically costs £50–£90 through an independent appliance engineer in the UK, which is worth considering for premium models like the Actifry Genius XL (RRP £200–£250) but harder to justify for entry-level Easy Fry models (RRP £60–£90). If the fault lies with the control board, repair costs can rise to £80–£130 including parts and labour, at which point replacing the appliance becomes the more sensible option for mid-range models. As a general rule: if the appliance is over 4–5 years old, the repair cost exceeds 50% of the replacement cost, or you’re finding parts hard to source, a replacement is the smarter long-term choice. Tefal parts availability in the UK is reasonably good for current and recent model ranges via eSpares and 4ourhouse, but older discontinued models can be harder to source parts for.