BoilerFaultCodes 2946 High
Boiler Fault Code 2946
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2946 appears across 1 boiler brand and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's computer memory chip is not being recognised or is mismatched, which prevents the system from starting up. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 2946 fix
Source
Information for the 2946 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