d.95 Low
Boiler Fault Code d.95
Also written as D95 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code d.95 appears across 2 boiler brands and 12 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is displaying a status message indicating a software compatibility check is currently active or has been triggered, rather than indicating a physical breakdown. (As reported on Vaillant Home Combi)
Pick your boiler brand for the d.95 fix
Source
Information for the d.95 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