How much does it cost to fix boiler error code P1?

Typical repair cost for the boiler P1 fault is £0-80 including labour.

P1 Low

Boiler Fault Code P1

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code P1 appears across 3 boiler brands and 19 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is displaying a service setting notification to run the pump at maximum speed, which usually indicates an installation or maintenance mode rather than a dangerous mechanical failure. (As reported on Ideal Logic Code Combi ESP1)

Pick your boiler brand for the P1 fix

Ideal P1 5 models Vaillant P1 1 model Worcester Bosch P1 13 models

Source

Information for the P1 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