Sensor Fault Unknown

Worcester Bosch Sensor Fault Fault Code

Also written as SENSORFAULT — same fault.

The Worcester Bosch Sensor Fault fault code indicates a fault on your boiler. It appears on 3 Worcester Bosch models in our database.

Technical description: DHW or CH sensor circuit fault or gas valve fault

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Worcester Bosch models that show the Sensor Fault fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch Sensor Fault fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026