BoilerFaultCodes E01-942 High
Boiler Fault Code E01-942
Also written as E01942 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E01-942 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 is struggling to clear exhaust fumes or draw in fresh air due to an issue with the pipe that goes through your wall to the outside. (As reported on Worcester Bosch 24i RSF)
Pick your boiler brand for the E01-942 fix
Source
Information for the E01-942 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