BoilerFaultCodes 2953 B High
Boiler Fault Code 2953 B
Also written as 2953B — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2953 B appears across 1 boiler brand and 1 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 an internal error while checking for a flame, meaning it cannot safely confirm if it is burning gas correctly. (As reported on Worcester Bosch Greenstar 2000)
Pick your boiler brand for the 2953 B fix
Source
Information for the 2953 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