E 14 High
Your boiler has detected that the sensor monitoring the temperature of the exhaust fumes is sending an incorrect signal or has failed.
Technical description: Exhaust gas temperature sensor error – electronic card detecting an anomaly in the gas exhaust gas sensor.
Typical repair cost: £120-£220 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like E 14 — no call-out fees, no surprises.
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Parts commonly replaced
- Exhaust gas temperature sensor (Flue NTC)
- Wiring harness
- Main printed circuit board (PCB)
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