$C High

Worcester Bosch $C Fault Code

Also written as C — same fault.

The Worcester Bosch $C fault code means: your boiler has detected that it is running too hot and has automatically shut down to prevent damage, meaning you currently have no heating or hot water.. It appears on 3 Worcester Bosch models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Burner overheat, burner sensor is tripped/open, check air supply and connections
Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Worcester Bosch models that show the $C fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Worcester Bosch $C fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026