How much does it cost to fix boiler error code 2956 O?

Typical repair cost for the boiler 2956 O fault is £80-180 including labour.

2956 O High

Boiler Fault Code 2956 O

Also written as 2956O — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 2956 O 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 been programmed with settings that do not match its internal hardware, causing it to stop working for safety. (As reported on Worcester Bosch Greenstar 2000)

Pick your boiler brand for the 2956 O fix

Worcester Bosch 2956 O 1 model

Source

Information for the 2956 O 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