FAIL POINT G High

Worcester Bosch FAIL POINT G Fault Code

Also written as FAILPOINTG — same fault.

The Worcester Bosch FAIL POINT G fault code means: your boiler has shut down because it has reached a temperature that is too high, often due to a lack of water or a circulation issue.. It appears on 4 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: Primary Overheat fault (water pressure, pump, sensor, or thermostat).

What causes the Worcester Bosch FAIL POINT G fault?

This fault occurs when the water inside the boiler gets too hot too quickly, triggering a safety switch to prevent damage. The most common reasons are a pump that has stopped moving the water around, a blockage in the pipework, or a sensor that is sending incorrect readings to the control board.

This issue is more frequent in autumn or winter when the heating is first switched on after a long summer break, as pumps can often seize up from lack of use.

Typical repair cost £120-£350 (including labour)

DIY fix possible

Check the pressure gauge and top up to 1.5 bar if it is lowEnsure all radiator valves are open to allow water flowPress the reset button once the boiler has cooled down

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Worcester Bosch models that show the FAIL POINT G fault code

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

Source

Worcester Bosch FAIL 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