BoilerFaultCodes 2971 B High
Boiler Fault Code 2971 B
Also written as 2971B — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2971 B appears across 1 boiler brand and 13 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has detected that the water pressure in your heating system is too low to operate safely and effectively. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 2971 B fix
Source
Information for the 2971 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