How much does it cost to fix boiler error code Autodiagnostics faulty?

Typical repair cost for the boiler Autodiagnostics faulty fault is £180-350 including labour.

Autodiagnostics faulty High

Boiler Fault Code Autodiagnostics faulty

Also written as AUTODIAGNOSTICSFAULTY — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Autodiagnostics faulty 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's computer system has detected an internal error, meaning it can no longer safely monitor or control the heating process. (As reported on Ariston Egis 24 MFFI)

Pick your boiler brand for the Autodiagnostics faulty fix

Ariston Autodiagnostics faulty 1 model

Source

Information for the Autodiagnostics faulty 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