BoilerFaultCodes 1065 High
Boiler Fault Code 1065
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 1065 appears across 1 boiler brand and 5 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 an issue with the sensor that monitors internal water pressure, meaning it cannot confirm if there is enough water to operate safely. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 1065 fix
Source
Information for the 1065 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