0E46 High
Your boiler has detected that the exhaust gases are either too hot or too cold, causing the system to shut down for safety.
Technical description: Flue sensor out of range (measures a temperature outside of normal working range)
Typical repair cost: £120-£240 (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 0E46 — no call-out fees, no surprises.
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Parts commonly replaced
- Flue NTC Sensor
- Main PCB
- Heat Exchanger
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