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