How much does it cost to fix boiler error code 2943?

Typical repair cost for the boiler 2943 fault is £120-250 including labour.

2943 High

Boiler Fault Code 2943

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 2943 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to work because the electricity supply it is receiving from your home's wall socket is weaker than it needs to be. (As reported on Worcester Bosch Greenstar 27CDi)

Pick your boiler brand for the 2943 fix

Worcester Bosch 2943 6 models

Source

Information for the 2943 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