How much does it cost to fix boiler error code Outside sensor (if fitted)?

Typical repair cost for the boiler Outside sensor (if fitted) fault is £90-180 including labour.

Outside sensor (if fitted) Low

Boiler Fault Code Outside sensor (if fitted)

Also written as OUTSIDESENSORIFFITTED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Outside sensor (if fitted) 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 lost connection with its outdoor thermometer, meaning it might struggle to adjust its temperature correctly for the weather. (As reported on Ideal Concord CXA 40-120)

Pick your boiler brand for the Outside sensor (if fitted) fix

Ideal Outside sensor (if fitted) 1 model

Source

Information for the Outside sensor (if fitted) 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