BoilerFaultCodes E2351 High
Boiler Fault Code E2351
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E2351 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 lost its connection to the component that monitors water temperature, meaning it cannot safely heat your home or water until the connection is restored. (As reported on Worcester Bosch CDi Classic)
Pick your boiler brand for the E2351 fix
Source
Information for the E2351 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