How much does it cost to fix boiler error code E.01 – .11?

Typical repair cost for the boiler E.01 – .11 fault is £250-£450 including labour.

E.01 – .11 High

Boiler Fault Code E.01 – .11

Also written as E0111 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E.01 – .11 appears across 1 boiler brand and 24 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's fan is not spinning at the correct speed, which is preventing the system from safely clearing exhaust fumes. (As reported on Baxi 200 / 400 Combi)

Pick your boiler brand for the E.01 – .11 fix

Baxi E.01 – .11 24 models

Source

Information for the E.01 – .11 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