How much does it cost to fix boiler error code 90?

Typical repair cost for the boiler 90 fault is £0-120 including labour.

90 Low

Boiler Fault Code 90

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 90 appears across 3 boiler brands and 14 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has paused operation due to a temporary internal communication or sensor error that may clear itself or indicate a service is needed. (As reported on Vokera Linea HE)

Pick your boiler brand for the 90 fix

Alpha 90 10 models Vokera 90 3 models Worcester Bosch 90 1 model

Source

Information for the 90 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