BoilerFaultCodes bP Low
Boiler Fault Code bP
Also written as BP — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code bP 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 detected very low temperatures and is automatically warming itself up to prevent the internal pipes from freezing. (As reported on Biasi Rinnova Adaptive Combi)
Pick your boiler brand for the bP fix
Source
Information for the bP 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