How much does it cost to fix Worcester Bosch error code 290 F0?

Typical repair cost for the Worcester Bosch 290 F0 fault is £250-450 including labour.

290 F0 High

Worcester Bosch 290 F0 Fault Code

Q: What does the Worcester Bosch 290 F0 fault code mean?

Your boiler's internal computer is struggling to read its own sensors, which has caused it to shut down for safety to prevent incorrect heating operations.

Also written as 290F0 — same fault.

The Worcester Bosch 290 F0 fault code means: your boiler's internal computer is struggling to read its own sensors, which has caused it to shut down for safety to prevent incorrect heating operations.. It appears on 3 Worcester Bosch models in our database.

Technical description: AD converter reference error

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 290 F0 fault code

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

Source

Worcester Bosch 290 F0 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