BoilerFaultCodes P1.6 Low
Boiler Fault Code P1.6
Also written as P16 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code P1.6 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 is notifying you that the water pressure in the system is currently at 1.6 bar, which is within the normal operating range. (As reported on Gledhill GB35C)
Pick your boiler brand for the P1.6 fix
Source
Information for the P1.6 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 7 July 2026