Oven
F14
The F14 error code on a Neff oven indicates a fault with the oven’s temperature sensor (NTC sensor) or its circuit — it’s a moderate fault that will prevent the oven from heating safely and needs addressing promptly.
What does this error mean?
F14 tells you that the oven’s control board has detected an abnormal reading from the NTC (Negative Temperature Coefficient) temperature sensor — the probe responsible for monitoring the internal cavity temperature. Either the sensor is sending a value that’s out of the expected range, or the connection between the sensor and the control board has broken down. As a result, the oven cannot regulate heat correctly and locks itself out to prevent overheating or underheating.
Est. repair cost
£15–£35 DIY sensor replacement; £80–£160 for professional repair (sensor or PCB)
🔍 Likely causes
🛠️ Step-by-step fix
Hard reset the oven: switch it off at the wall socket (or trip the circuit breaker), wait 5 minutes, then power it back on. If F14 clears and doesn’t return, it was a temporary glitch — monitor for recurrence.
Locate the NTC sensor: it’s usually a small metal probe mounted on the back wall inside the oven cavity, secured by one or two screws. With the oven completely cool and unplugged, visually inspect it for visible damage, burning, or heavy grease coating.
Clean the sensor probe: if it’s coated in grease or residue, gently clean it with a damp cloth and mild degreaser. Re-power and test — contamination can cause false readings.
Check the sensor connector: with the oven unplugged, carefully pull the oven away from the wall, remove the back panel (usually 4–6 screws), and locate the wiring connector at the sensor. Press it firmly to reseat it. Inspect the wires for visible damage. Refit the panel and test.
Test or replace the NTC sensor: a replacement Neff-compatible NTC sensor typically costs £15–£35 online. Unscrew the old sensor from inside the cavity, disconnect the wiring plug, and fit the new one. This is a straightforward DIY task for a confident homeowner — no specialist tools required.
If the sensor tests fine (or replacing it doesn’t clear the fault), the control board (PCB) is the likely culprit — stop here and call a qualified appliance engineer, as PCB diagnosis and replacement requires specialist tools and knowledge.
📞 When to call a professional
Call an appliance engineer if replacing the NTC sensor doesn’t resolve the F14 code, as the fault likely lies with the main control board (PCB) — a job that requires professional diagnosis. Also call immediately if you notice any burnt smells, scorched wiring, or the oven trips your consumer unit when switched on. When booking, tell the engineer: ‘My Neff oven is showing error code F14 — I’ve already reset it and suspect the NTC sensor or PCB.’
⚖️ Repair or replace?
A professional repair for an F14 fault typically costs £80–£160 depending on whether it’s a sensor or PCB replacement — PCB repairs sit at the higher end. If your Neff oven is under 8 years old and was mid-to-high range, repair is almost always worthwhile. If it’s over 10–12 years old and repair costs exceed £150, a new built-in oven from £350 upwards is worth considering.