46E High
Your boiler has detected a problem with the sensor that monitors internal water pressure, meaning it cannot confirm if there is enough water to operate safely.
Technical description: Water pressure sensor error, could be open or short
Typical repair cost: £120-220 (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 46E — no call-out fees, no surprises.
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Parts commonly replaced
- Water pressure sensor
- Sensor wiring harness
- Main PCB
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