How much does it cost to fix boiler error code E26 186?

Typical repair cost for the boiler E26 186 fault is £150-250 including labour.

E26 186 High

Boiler Fault Code E26 186

Also written as E26186 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E26 186 appears across 1 boiler brand and 2 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 airflow sensors, which is preventing it from safely starting up and producing heat. (As reported on Baxi Solo PF)

Pick your boiler brand for the E26 186 fix

Baxi E26 186 2 models

Source

Information for the E26 186 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