BoilerFaultCodes i02 Low
Boiler Fault Code i02
Also written as I02 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code i02 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 This code is simply a historical record of the last issue your boiler experienced and does not indicate an active, current fault. (As reported on Worcester Bosch Greenstar 12i System)
Pick your boiler brand for the i02 fix
Source
Information for the i02 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