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

Typical repair cost for the boiler E fault is £150-£350 including labour.

E High

Boiler Fault Code E

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code E appears across 5 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 detected a safety lockout, which usually points to an issue with airflow, the flue, or internal sensors, causing it to shut down to protect your home. (As reported on Worcester Bosch 24i / 28i Junior)

Pick your boiler brand for the E fix

Ariston E 1 model Baxi E 5 models Halstead E 2 models Main E 2 models Worcester Bosch E 4 models

Source

Information for the E 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 31 August 2026