BoilerFaultCodes P2 Medium
Boiler Fault Code P2
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code P2 appears across 2 boiler brands and 14 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is stuck in a service mode where it runs at maximum power constantly, which is usually triggered during maintenance or testing. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the P2 fix
Source
Information for the P2 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