BoilerFaultCodes E2 351 High
Boiler Fault Code E2 351
Also written as E2351 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E2 351 appears across 1 boiler brand and 11 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 the connection to the component that monitors the temperature of the water circulating through your heating system, so it has shut down to prevent overheating. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the E2 351 fix
Source
Information for the E2 351 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