How much does it cost to fix boiler error code E.04 .254?

Typical repair cost for the boiler E.04 .254 fault is £180-350 including labour.

E.04 .254 Emergency

Boiler Fault Code E.04 .254

Also written as E04254 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code E.04 .254 appears across 1 boiler brand and 1 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 an issue with the internal electronics that manage the fuel supply, so it has safely shut down to prevent unsafe operation. (As reported on Baxi Assure System)

Pick your boiler brand for the E.04 .254 fix

Baxi E.04 .254 1 model

Source

Information for the E.04 .254 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