BoilerFaultCodes Pressure Gauge below 1 bar High
Boiler Fault Code Pressure Gauge below 1 bar
Also written as PRESSUREGAUGEBELOW1BAR — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pressure Gauge below 1 bar appears across 1 boiler brand and 3 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 water pressure, meaning there isn't enough water in the system to keep the heating and hot water running. (As reported on Baxi Combi Elite)
Pick your boiler brand for the Pressure Gauge below 1 bar fix
Source
Information for the Pressure Gauge below 1 bar 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