BoilerFaultCodes E2 222 High
Boiler Fault Code E2 222
Also written as E2222 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E2 222 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 detected an electrical fault with the internal sensor that monitors the flow of water, meaning it cannot safely regulate the temperature and has shut down to prevent damage. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the E2 222 fix
Source
Information for the E2 222 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