Air Fryer
E2
The E2 error code on a Tefal air fryer points to a temperature sensor fault — specifically, the appliance has detected that its internal NTC (thermistor) sensor is reading an abnormal temperature, either too high, too low, or no signal at all. It sounds alarming, but in many cases the fix is straightforward and something you can sort yourself in under 30 minutes. In this guide, you’ll learn exactly what triggers the E2 code, which causes are most common on Tefal’s popular Easy Fry and Actifry ranges, and which steps to try before deciding whether a repair or replacement makes more sense.
What does this error mean?
The E2 error code on a Tefal air fryer is a temperature sensor error. Inside every Tefal air fryer sits a small NTC thermistor — a component that continuously monitors the internal cooking temperature and feeds that data back to the appliance’s control board. When the control board receives a reading that falls outside a safe or expected range (for example, a short circuit in the sensor, an open circuit meaning no signal at all, or a temperature reading that is implausibly high or low), it immediately shuts the appliance down and displays E2 to protect both you and the unit from damage. Think of it as the air fryer’s way of saying: ‘I can’t confirm how hot it is inside, so I’m refusing to run.’ The appliance is not necessarily broken beyond repair — it may simply be reacting to a temporary fault, a dirty sensor, or a loose connection rather than a fully failed component.
Est. repair cost
£8–£20 for a DIY thermistor replacement; £60–£120 for a professional repair (thermistor or wiring fault); £100–£150+ if the control board requires replacement
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Power off and unplug completely: Switch the air fryer off at the plug and unplug it from the wall socket. Do not simply press the standby button. Leave it unplugged for at least 10–15 minutes to allow any residual heat and static charge to fully dissipate before you do anything else.
Step 2 — Perform a hard reset: After the 10–15 minute wait, plug the unit back in and power it on without adding any food. Many temporary sensor glitches caused by a power surge or a one-off overread will clear themselves after a full power cycle. If the E2 code does not reappear, run a short empty test cycle at a low temperature (around 160°C for 5 minutes) to confirm the fault has cleared.
Step 3 — Check the ventilation clearance: Ensure the air fryer has at least 10–15 cm of clear space on all sides and at the rear. If it was positioned against a wall, inside a cabinet, or directly under overhead cupboards, move it to a more open surface and retry. Overheating caused by poor airflow is a surprisingly common trigger for E2.
Step 4 — Deep clean the cooking chamber and heating element: Remove the basket or pan and use a soft, damp (not wet) cloth or a soft-bristle brush to carefully remove any grease deposits, burnt food, or debris from inside the cooking chamber — paying particular attention to the heating coil at the top and the area immediately around it where the thermistor probe is usually located. Never use abrasive scourers or spray water directly into the unit. Allow everything to dry completely (at least 1–2 hours, or overnight) before powering back on.
Step 5 — Inspect the basket and drawer for damage: A cracked, warped, or incorrectly seated basket can disrupt airflow in ways that cause hotspots inside the chamber. Remove the basket, check it for visible damage, and ensure it clicks firmly back into place. On Actifry models, also check that the rotating paddle is properly seated and turns freely without obstruction.
Step 6 — Check for moisture: If you cleaned the appliance recently, make sure every component — basket, drawer, lid, and the interior of the main unit — is completely dry before reassembling and attempting to run it. Moisture near the sensor connector is a frequently overlooked cause of E2 on Tefal units.
Step 7 — Locate and visually inspect the thermistor (intermediate DIY — proceed with caution): If the error persists after all the steps above, the thermistor itself may need inspecting. On most Tefal Easy Fry models, the NTC thermistor is a small probe mounted near the heating element, accessible from inside the cooking chamber without opening the main casing. Look for visible damage such as a burnt, melted, or physically broken probe. Do NOT open the main outer casing of the appliance or touch any internal wiring — this requires a professional. If the probe looks visibly damaged, it is time to call a repairer or consider replacement.
Step 8 — Source and replace the thermistor (confident DIYers only): If you are comfortable with basic appliance repair, replacement NTC thermistors compatible with Tefal Easy Fry and Actifry models are available from UK spare parts suppliers such as eSpares, 4ourhouse, and BuySpares, typically priced between £8 and £20. Always match the part to your exact model number (found on the label on the underside of the unit). Replacing the thermistor generally involves removing 2–4 screws from the interior chamber panel — do NOT proceed if this requires opening the sealed outer electrical casing, as this is not a safe DIY task.
Step 9 — If none of the above resolves the issue, stop DIY and contact a professional: A persisting E2 error after cleaning, resetting, and checking the sensor points to either a failed thermistor with internal faults not visible to the eye, a damaged wiring harness, or a control board fault — all of which require professional diagnosis and should not involve opening the appliance’s main electrical enclosure yourself.
📞 When to call a professional
You should stop DIY attempts and contact a qualified appliance repair engineer if: the E2 error returns immediately after a hard reset and thorough clean; you can see visible burn marks, melted plastic, or a strong burning smell anywhere near the heating element or sensor; the error only clears temporarily but keeps coming back; or you have already replaced the thermistor and the fault persists (suggesting a control board issue). When you call, tell the engineer: ‘My Tefal air fryer [give your full model number, e.g. EY501840] is displaying an E2 error code, which I understand relates to the temperature sensor. I have already performed a hard reset, deep cleaned the unit, checked ventilation, and the fault persists.’ This will save time and help them arrive with the right parts. For finding a reputable local appliance repair engineer in the UK, check the Domestic and General approved repairer network, Checkatrade, or contact Tefal’s UK customer support line directly on 0345 602 1454 to ask about authorised service centres.
⚖️ Repair or replace?
For a Tefal air fryer displaying E2, the repair-or-replace decision largely comes down to the age of the appliance and the root cause. If the fault is simply a dirty sensor or a failed thermistor, a DIY fix will cost you under £20 and 30 minutes of your time — well worth it for any machine less than four or five years old. If the control board is at fault, a professional repair is likely to cost £60–£120 including parts and labour, which only makes sense if your air fryer is a higher-end model (such as the Tefal Easy Fry Genius+ or a larger Actifry XXL) that would cost £150–£250 or more to replace new. For budget Tefal air fryers in the £50–£80 bracket, a control board repair will cost more than the appliance is worth — replacement is the smarter call. Tefal spare parts availability in the UK is generally good for models up to around five years old, with thermistors, heating elements, and baskets stocked by major UK parts suppliers. Beyond five years, parts become harder to source and the cost calculation increasingly favours replacement. Tefal air fryers carry a standard two-year manufacturer’s warranty in the UK, so if your appliance is under two years old, contact Tefal directly before spending a penny on repairs.