BoilerFaultCodes 2965 B High
Boiler Fault Code 2965 B
Also written as 2965B — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2965 B appears across 1 boiler brand and 14 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has shut down because the water inside is getting much hotter than it should be, which is often caused by a blockage or a pump failure preventing the heat from moving away. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 2965 B fix
Source
Information for the 2965 B fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026