How much does it cost to fix boiler error code A1 281?

Typical repair cost for the boiler A1 281 fault is £120-250 including labour.

A1 281 High

Boiler Fault Code A1 281

Also written as A1281 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code A1 281 appears across 1 boiler brand and 13 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that water is not circulating properly, likely because the system pressure is too low or there is trapped air preventing the pump from working correctly. (As reported on Worcester Bosch Greenstar CDi Compact)

Pick your boiler brand for the A1 281 fix

Worcester Bosch A1 281 13 models

Source

Information for the A1 281 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