BoilerFaultCodes SENSOR STUCK LOCKOUT High
Boiler Fault Code SENSOR STUCK LOCKOUT
Also written as SENSORSTUCKLOCKOUT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code SENSOR STUCK LOCKOUT appears across 1 boiler brand and 2 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 it cannot correctly detect the temperature of the water being heated, so it has shut down as a safety precaution. (As reported on Johnson Starley Quantec C)
Pick your boiler brand for the SENSOR STUCK LOCKOUT fix
Source
Information for the SENSOR STUCK LOCKOUT 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 31 August 2026