BoilerFaultCodes E042 High
Boiler Fault Code E042
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E042 appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has lost the ability to measure the water pressure accurately, which has caused it to stop running for safety. (As reported on Vokera Evolve)
Pick your boiler brand for the E042 fix
Source
Information for the E042 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