BoilerFaultCodesRavenheat E46 Fault Code
The Ravenheat E46 fault code means: your boiler is having trouble monitoring its internal water pressure, which has caused it to stop working for safety.. It appears on 9 Ravenheat models in our database.
Technical description: Water pressure sensor error – could be open or short
What causes the Ravenheat E46 fault?
This fault occurs when the boiler's control system loses communication with the sensor that monitors water levels and pressure. The most common reason is a physical failure of the sensor itself or a loose connection in the internal wiring. When the boiler cannot verify that it has enough water to operate safely, it will shut 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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Gas Safe Register →Ravenheat models that show the E46 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ravenheat E46 fault code information on this page is sourced and cross-checked against the official Ravenheat service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026