How much does it cost to fix Worcester Bosch error code Failure at point B?

Typical repair cost for the Worcester Bosch Failure at point B fault is £90-210 including labour.

Failure at point B High

Worcester Bosch Failure at point B Fault Code

Q: What does the Worcester Bosch Failure at point B fault code mean?

Your boiler is struggling to keep its internal pilot light lit, which is preventing the main heating system from starting up.

Also written as FAILUREATPOINTB — same fault.

The Worcester Bosch Failure at point B fault code means: your boiler is struggling to keep its internal pilot light lit, which is preventing the main heating system from starting up.. It appears on 1 Worcester Bosch model in our database.

Technical description: Pilot flame does not remain established. Check if overheat thermostat has tripped, pilot flame height (18-20mm), pilot injector blockage, and thermocouple/gas valve connections.

Typical repair cost £90-210 (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 Failure at point B fault code

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

24CDi BF Repair: £90-210

Source

Worcester Bosch Failure at point B 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