BoilerFaultCodesYour boiler's internal water pressure sensor is not communicating properly with the control board, preventing the system from operating safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Pressure sensor defective or not connected – check pressure sensor connection as it may need replacing
What causes this fault?
This fault occurs when the boiler's brain loses contact with the sensor that monitors water pressure, often due to a loose wire or a physical failure inside the sensor itself. Without this vital data, the boiler shuts down as a safety precaution because it cannot confirm there is enough water to operate without overheating.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like 1065 B — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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