How much does it cost to fix boiler error code P27?

Typical repair cost for the boiler P27 fault is £80-160 including labour.

P27 High

Boiler Fault Code P27

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code P27 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's internal wiring has been connected incorrectly, causing it to confuse high and low pressure readings. (As reported on Ideal HP290)

Pick your boiler brand for the P27 fix

Ideal P27 1 model

Source

Information for the P27 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