How much does it cost to fix boiler error code Pr12?

Typical repair cost for the boiler Pr12 fault is £80-120 including labour.

Pr12 Low

Boiler Fault Code Pr12

Also written as PR12 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Pr12 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 notifying you that its maximum power setting has been manually limited, often for efficiency or to match the specific size of your home. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the Pr12 fix

Johnson Starley Pr12 1 model

Source

Information for the Pr12 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