Fault 51 / 132 Medium
Boiler Fault Code Fault 51 / 132
Also written as FAULT51132 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fault 51 / 132 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 detected that the wrong type of sensor has been installed or connected for your hot water system, causing a communication error within the internal electronics. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the Fault 51 / 132 fix
Source
Information for the Fault 51 / 132 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