365 Emergency

Worcester Bosch 365 Fault Code

The Worcester Bosch 365 fault code means: your boiler has detected an internal gas valve fault, meaning it can no longer safely manage the flow of fuel to the burner, so it has shut down to protect your home.. It appears on 6 Worcester Bosch models in our database.

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description: Solenoid valve ev1 leaking.

What causes the Worcester Bosch 365 fault?

Gas valve leak detected

Typical repair cost £250-400 (including labour)

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 365 fault code

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

Source

Worcester Bosch 365 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 27 April 2026