BoilerFaultCodes Pressure Gauge below 0.5 High
Boiler Fault Code Pressure Gauge below 0.5
Also written as PRESSUREGAUGEBELOW05 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pressure Gauge below 0.5 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 stopped working because the water pressure is too low, often caused by a small leak or air in the radiators. (As reported on Potterton Performa 24 Eco HE)
Pick your boiler brand for the Pressure Gauge below 0.5 fix
Source
Information for the Pressure Gauge below 0.5 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