How much does it cost to fix boiler error code 1-d2?

Typical repair cost for the boiler 1-d2 fault is £90-180 including labour.

1-d2 Low

Boiler Fault Code 1-d2

Also written as 1D2 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 1-d2 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 is reporting a minor sensor issue related to your solar hot water system, but it is not a breakdown of the central heating itself. (As reported on Worcester Bosch Greenstar 8000 Life/Style)

Pick your boiler brand for the 1-d2 fix

Worcester Bosch 1-d2 1 model

Source

Information for the 1-d2 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