How much does it cost to fix boiler error code Section C?

Typical repair cost for the boiler Section C fault is £150-250 including labour.

Section C High

Boiler Fault Code Section C

Also written as SECTIONC — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Section C appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to circulate water properly, likely due to low pressure or a sticking internal component that prevents hot water from reaching your radiators or taps. (As reported on Baxi 105e)

Pick your boiler brand for the Section C fix

Alpha Section C 1 model Baxi Section C 2 models

Source

Information for the Section C 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