41 High
Your boiler has lost communication with the water pressure sensor, meaning it cannot confirm if there is enough water to run safely.
Technical description: No water pressure signal recievced fom MMI
Typical repair cost: £120-280 (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 41 — no call-out fees, no surprises.
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Parts commonly replaced
- Water Pressure Sensor
- Wiring Loom
- Main PCB
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