p[ xx Low

Boiler Fault Code p[ xx

Also written as PXX — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code p[ xx 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 currently running a routine internal setup or air-clearing cycle and is operating normally. (As reported on Remeha Avanta 18V)

Pick your boiler brand for the p[ xx fix

Remeha p[ xx 2 models

Source

Information for the p[ xx 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