How much does it cost to fix boiler error code COdE?

Typical repair cost for the boiler COdE fault is £80-120 including labour.

COdE Low

Boiler Fault Code COdE

Also written as CODE — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code COdE 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 is asking for a secure service password, which usually appears during routine maintenance or setup and indicates it is currently locked from standard operation. (As reported on Atag Q 25CR)

Pick your boiler brand for the COdE fix

Atag COdE 4 models

Source

Information for the COdE 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