How much does it cost to fix boiler error code 8/0/8?

Typical repair cost for the boiler 8/0/8 fault is £120-220 including labour.

8/0/8 High

Boiler Fault Code 8/0/8

Also written as 808 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 8/0/8 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 having trouble detecting the temperature of the water it is heating for your taps and shower, likely due to a loose wire or a faulty sensor. (As reported on Worcester Bosch GB162)

Pick your boiler brand for the 8/0/8 fix

Worcester Bosch 8/0/8 1 model

Source

Information for the 8/0/8 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