E 05 High
Your boiler has lost its connection to the sensor that monitors the heating temperature, causing the system to stop running to prevent damage.
Technical description: Temperature sensor from radiator error – electronic card detecting a failure.
Typical repair cost: £90-180 (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 05 — no call-out fees, no surprises.
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Parts commonly replaced
- NTC Heating Sensor
- Wiring Harness
- Main Circuit Board (PCB)
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