Oven
F14
The F14 error code on an AEG oven indicates a fault with the oven’s temperature sensor (NTC probe) or the circuit connected to it — it’s a moderately serious fault that will prevent the oven from heating correctly until resolved.
What does this error mean?
F14 signals that the oven’s control board has detected an abnormal reading from the NTC temperature sensor — the component responsible for monitoring internal oven temperature. This could mean the sensor is reading a temperature that is implausibly high, out of the expected range, or that the signal from the sensor has been lost entirely. Until the fault is cleared, the oven may refuse to heat or may shut off mid-cycle as a safety precaution.
Est. repair cost
£15–£35 DIY (sensor part only); £80–£180 for professional repair including call-out
🔍 Likely causes
🛠️ Step-by-step fix
Power cycle the oven: switch it off at the wall socket (or trip the circuit breaker), wait 5 minutes, then restore power. A transient electronics glitch can occasionally trigger F14 and a reset clears it.
Check the oven cavity for obvious damage: open the oven door and visually inspect the NTC sensor probe — usually a small metal rod mounted on the back wall or ceiling of the oven cavity. Look for cracks, burning, or a visibly bent probe.
Inspect the sensor connector: if you are comfortable doing so, pull the oven away from the wall, remove the rear panel (after isolating the power), and check that the wiring connector to the NTC sensor is firmly seated and shows no signs of burning or corrosion. Reseat it firmly if loose.
Test the NTC sensor resistance: using a multimeter set to Ohms, measure resistance across the sensor terminals. At room temperature (~20°C), a healthy AEG NTC sensor typically reads approximately 4,000–6,000 Ohms. A reading of 0 (short) or OL (open circuit) confirms a failed sensor.
Replace the NTC sensor if faulty: AEG NTC oven sensors are widely available from UK appliance parts suppliers (e.g. eSpares, 4ourhouse). Ensure you buy the correct part for your model number (found on the rating plate inside the door frame). Replacement is a straightforward plug-and-connector job once the oven is isolated from power.
If the error persists after replacing the sensor, stop DIY work — the control board (PCB) is likely at fault and requires professional diagnosis and replacement.
📞 When to call a professional
Call an engineer if the F14 error returns after a confirmed NTC sensor replacement, as this points to a PCB fault that is not safely DIY-repairable. Also call a professional if you are uncomfortable working with electrical wiring inside the appliance. Tell the engineer: ‘My AEG oven is showing an F14 error — I suspect either the NTC temperature sensor or the main control board.’
⚖️ Repair or replace?
An NTC sensor replacement (DIY) costs £15–£35 in parts and is straightforward for a confident DIYer. A professional repair — whether sensor or PCB — typically costs £80–£180 including call-out in the UK. If your oven is over 8–10 years old and the PCB has failed, a new mid-range AEG oven (£400–£700) is likely the better investment over a £120–£180 PCB repair.