How much does it cost to fix boiler error code 81?

Typical repair cost for the boiler 81 fault is £120-250 including labour.

81 High

Boiler Fault Code 81

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 81 appears across 2 boiler brands 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 identified an internal sensor or communication error that is preventing it from running properly. (As reported on Vokera Linea HE)

Pick your boiler brand for the 81 fix

Ideal 81 2 models Vokera 81 3 models

Source

Information for the 81 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