BoilerFaultCodesYour boiler has lost the ability to measure the water pressure accurately, which has caused it to stop running for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Water transducer fault
What causes this fault?
This fault occurs when the internal sensor responsible for monitoring water pressure fails to send a reliable signal to the main control board. The most common cause is a component failure within the transducer itself or a loose connection in the wiring harness. Because the boiler cannot verify if there is enough water to operate safely, it shuts down to prevent internal 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 E042 — 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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