Air Fryer
E2
The E2 error code on a Cosori air fryer indicates a temperature sensor fault — specifically, the appliance is detecting that its internal NTC (thermistor) temperature sensor has either failed, become disconnected, or is reading an abnormal value. It’s not the most serious fault you can encounter, and in many cases it’s something you can resolve yourself, but it does mean your air fryer will refuse to operate until the issue is addressed. In this guide, we’ll walk you through exactly what causes the E2 error, what you can safely try at home, and when it’s time to call in a professional or consider a replacement.
What does this error mean?
The E2 error code on Cosori air fryers — including popular models such as the CP158-AF, CAF-P130S, and the Dual Blaze range — is a temperature sensor error. Your air fryer relies on an NTC thermistor (a small electronic component that changes its electrical resistance as temperature changes) to monitor the heat inside the cooking chamber in real time. When the appliance’s control board detects that the signal coming from this sensor is outside the expected range — either because the sensor has failed, the wiring has come loose, or there’s a short circuit — it throws the E2 code and shuts down as a safety precaution. In plain English: your air fryer doesn’t know how hot it is inside, so it refuses to run rather than risk overheating or undercooking your food. This is a sensible safety feature, not a sign that the whole machine is beyond saving.
Est. repair cost
£5–£15 for a DIY thermistor replacement part; £60–£120 for a professional repair including labour; £60–£200+ for a brand-new replacement Cosori air fryer (UK retail)
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Power off and unplug completely: Switch the air fryer off at the unit, then unplug it from the wall socket. Leave it unplugged for at least 10–15 minutes. This allows any temporary electrical fault or firmware glitch to fully clear. This costs nothing and fixes the problem in a surprising number of E2 cases reported by UK Cosori owners.
Step 2 — Plug back in and test: After the waiting period, plug the air fryer back in, switch it on, and set it to a standard cook cycle (e.g. 180°C for 5 minutes). If the E2 code has gone, monitor the unit through a full cook to confirm it’s working normally. If E2 returns immediately or during the cook, move to Step 3.
Step 3 — Inspect and clean the cooking chamber and sensor area: Remove the basket and drawer fully. Using a torch, look inside the cooking chamber for the small temperature sensor probe — it typically sits near the top of the chamber on Cosori models. Using a soft, damp cloth or a cotton bud lightly dampened with warm water, gently clean any visible grease or food residue from around the sensor. Never use abrasive cleaners or submerge this area in water. Dry thoroughly before reassembling.
Step 4 — Check the basket and drawer are correctly seated: A poorly fitted basket can, on some Cosori models, prevent proper airflow and indirectly affect sensor readings. Remove the basket and drawer, then firmly reinsert them, ensuring they click fully into place. A misaligned drawer can also partially obstruct the sensor on dual-drawer models.
Step 5 — Check ventilation around the unit: Ensure the air fryer has at least 10–15cm of clear space on all sides and above it. If it was used in a cupboard or against a wall, poor ventilation could have caused heat stress to the sensor. Move the unit to an open countertop position and retest.
Step 6 — Perform a factory reset (smart models): If you have a Cosori smart air fryer connected to the VeSync app, open the app, navigate to the device settings, and select ‘Remove Device’ or ‘Reset’. Re-pair the appliance following the in-app instructions. On non-smart models with a digital display, consult your specific model’s manual (available free on the Cosori UK website at cosori.com/uk) for a hard reset procedure, which typically involves holding the power button for 5–10 seconds.
Step 7 — Check your warranty before going further: Cosori offers a 2-year warranty on most UK appliances. If your unit is within this period, stop here — do NOT attempt to open the appliance, as this will void your warranty. Contact Cosori UK customer support directly at support@cosori.com or via their website. They are generally responsive and may offer a free replacement unit or repair.
Step 8 — DIY thermistor replacement (out-of-warranty units only — proceed with caution): If your unit is out of warranty and you are comfortable with basic electronics, replacement NTC thermistors compatible with Cosori air fryers are available from UK sellers on eBay and Amazon for approximately £5–£15. You will need a small Phillips-head screwdriver set and ideally a multimeter to test the old sensor first (a healthy NTC thermistor should show a resistance of roughly 10kΩ at room temperature). IMPORTANT: Only attempt this if you are confident working with small electronics. If you need to access the control board or internal wiring beyond the sensor itself, stop and call a professional — do not attempt repairs involving the main PCB, capacitors, or mains wiring at home.
Step 9 — Contact Cosori UK support: Even outside warranty, Cosori’s UK customer service team can often supply spare parts or point you to authorised repair centres. Quote your exact model number (found on the base of the unit) and tell them you have an E2 error code that has persisted through a power reset and cleaning.
📞 When to call a professional
You should stop DIY attempts and contact a professional appliance repair technician if: the E2 error persists after completing all the steps above; you have inspected the sensor and it appears physically damaged (burnt, snapped, or corroded); the error is accompanied by any unusual smells, sparking, or the unit feeling excessively hot on its outer casing; or if you suspect the fault lies with the main control board rather than the sensor itself. When you call, tell the engineer: ‘I have a Cosori air fryer showing an E2 temperature sensor error. I have tried a full power reset, cleaned the sensor area, and confirmed the basket is correctly seated. The error persists.’ This will save time and help them quote accurately. For UK homeowners, look for a local appliance repair technician via the Domestic & General network, Repaircare, or a trusted independent on Checkatrade. Note that because this is a small domestic electrical appliance (not a gas appliance), there is no Gas Safe requirement — any competent appliance repair engineer can work on it.
⚖️ Repair or replace?
Here’s the honest UK homeowner’s calculation: A professional repair for a Cosori E2 fault will typically cost £60–£120 including parts and labour — sometimes more if the control board needs replacing. Cosori air fryers in the UK range from around £60 for a basic single-drawer model up to £200+ for a large dual-drawer or smart model. If your air fryer cost less than £80 and is over 2 years old, a professional repair is unlikely to make financial sense — replacement is probably the wiser move. If you own a higher-end Cosori model (the Dual Blaze, the TurboBlaze, or a large-capacity smart model) that cost £130 or more, a repair is absolutely worth pursuing, especially since Cosori spare parts are reasonably available in the UK compared to some budget brands. The DIY thermistor replacement route (Steps 7–8 above) is very cost-effective if you’re handy — parts cost under £15 and the repair can be done in under an hour. As a general rule: if the appliance is under 2 years old, claim your warranty first. If it’s 2–4 years old and a mid-to-high-end model, repair it. If it’s over 4 years old or a budget model, replacing it is the more practical choice.