How much does it cost to fix boiler error code I2H?

Typical repair cost for the boiler I2H fault is £150-300 including labour.

I2H High

Boiler Fault Code I2H

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code I2H 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 internal fault that is preventing it from firing up, resulting in a loss of heating and hot water. (As reported on Baxi Suprima 40)

Pick your boiler brand for the I2H fix

Baxi I2H 1 model

Source

Information for the I2H 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