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

Typical repair cost for the Worcester Bosch Failure at point G fault is £130-£320 including labour.

Failure at point G High

Worcester Bosch Failure at point G Fault Code

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

Your boiler is failing to turn down or shut off its flame as it gets hot, which may cause the system to overheat and shut down for safety.

Also written as FAILUREATPOINTG — same fault.

The Worcester Bosch Failure at point G fault code means: your boiler is failing to turn down or shut off its flame as it gets hot, which may cause the system to overheat and shut down for safety.. It appears on 1 Worcester Bosch model in our database.

Technical description: Burner does not modulate or shut down correctly as system temperature rises. Involves checking Modureg voltage and overheat thermostat activation.

Typical repair cost £130-£320 (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 G fault code

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

24CDi BF Repair: £130-£320

Source

Worcester Bosch Failure at point G 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