2085 High

Worcester Bosch 2085 Fault Code

The Worcester Bosch 2085 fault code means: your boiler has encountered an internal software or communication error that is preventing it from heating your home.. It appears on 8 Worcester Bosch models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Internal fault

What causes the Worcester Bosch 2085 fault?

This fault occurs when the boiler's internal computer brain fails to communicate properly with the other electrical components. It is physically caused by a data processing error on the main circuit board or a loose connection in the wiring that prevents the system from safely managing the heating process.

Typical repair cost £250-450 (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 2085 fault code

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

Source

Worcester Bosch 2085 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