Air Fryer
E6
The E6 error code on a Cosori air fryer indicates a temperature sensor or overheating fault — it’s the appliance’s way of telling you something is preventing it from regulating heat safely. It’s a common issue and, in most cases, fixable at home without any tools.
What does this error mean?
E6 means the air fryer’s internal thermistor (temperature sensor) has detected that the unit is running too hot, or the sensor itself has failed and is sending an incorrect reading. The appliance shuts down as a safety precaution to prevent damage or fire. This is not a catastrophic failure — it’s a protective cut-out doing its job.
Est. repair cost
£40–£70 professional repair; £5–£15 DIY thermistor part (requires opening the unit)
🔍 Likely causes
🛠️ Step-by-step fix
Unplug immediately and let it cool for at least 30 minutes — do not attempt to restart until the unit is completely cool to the touch.
Check the vents: Ensure at least 10–15 cm of clear space exists on all sides and behind the unit. Never operate it in a cupboard or against a wall.
Deep clean the basket, drawer, and interior: Remove and wash the basket, then wipe down the interior and around the heating element with a damp cloth to remove grease deposits. Ensure everything is fully dry before use.
Reduce the basket load: Do not fill the basket more than halfway — overpacking is one of the leading causes of E6 on Cosori models.
Perform a hard reset: Once cool, plug back in, hold the power button for 5–10 seconds until the display resets, then attempt a short test cook at a lower temperature (around 160°C) with a small amount of food.
If the error reappears immediately after reset with an empty basket and good ventilation, the thermistor is likely faulty — this requires a part replacement (see below) or professional assessment.
📞 When to call a professional
If the E6 code returns persistently after cleaning, resetting, and ensuring proper ventilation, the thermistor needs replacing — a straightforward repair for a small appliance technician. Contact Cosori UK support first (0800 298 7054 or via their website), as many units under 12 months old are covered under warranty. Tell the engineer or support team you’re getting a persistent E6 with no overheating conditions present, pointing to a sensor fault.
⚖️ Repair or replace?
A thermistor replacement typically costs £40–£70 through a small appliance repair shop, or you can source the part for £5–£15 and replace it yourself if you’re comfortable with basic electronics — though this involves opening the casing, so only attempt it if you’re confident. New Cosori air fryers range from £60–£130 in the UK; if your unit is over 3 years old and out of warranty, replacement is often the more cost-effective route. For units under 2 years old in good condition, repair is worthwhile.