How much does it cost to fix boiler error code 112?

Typical repair cost for the boiler 112 fault is £90-160 including labour.

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Boiler Fault Code 112

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code 112 appears across 3 boiler brands and 4 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 a problem with the sensor that monitors water returning from your radiators, causing the system to stop working as a safety precaution. (As reported on Ariston Genus ONE+ WiFi)

Pick your boiler brand for the 112 fix

Ariston 112 1 model Atag 112 1 model Worcester Bosch 112 2 models

Source

Information for the 112 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 31 August 2026