How much does it cost to fix boiler error code P16?

Typical repair cost for the boiler P16 fault is £120-250 including labour.

P16 Medium

Boiler Fault Code P16

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code P16 appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is having trouble correctly measuring or reaching the requested temperature for your hot water taps. (As reported on Alpha Pro Tec Plus)

Pick your boiler brand for the P16 fix

Alpha P16 2 models

Source

Information for the P16 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 7 July 2026