How much does it cost to fix boiler error code 2S01?

Typical repair cost for the boiler 2S01 fault is £80-120 including labour.

2S01 Low

Boiler Fault Code 2S01

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 2S01 appears across 1 boiler brand 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 notifying you that it has been configured to be controlled by a single external timer or thermostat wire rather than a smart system. (As reported on Ideal Logic Code Combi ESP1)

Pick your boiler brand for the 2S01 fix

Ideal 2S01 3 models

Source

Information for the 2S01 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