How much does it cost to fix boiler error code C2849?

Typical repair cost for the boiler C2849 fault is £180-450 including labour.

C2849 High

Boiler Fault Code C2849

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code C2849 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 stopped working because of a communication failure between its internal electronic brains and a fault in the ignition system. (As reported on Grant Vortex)

Pick your boiler brand for the C2849 fix

Grant C2849 2 models

Source

Information for the C2849 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