How much does it cost to fix Worcester Bosch error code FAIL POINT C?

Typical repair cost for the Worcester Bosch FAIL POINT C fault is £280-450 including labour.

FAIL POINT C High

Worcester Bosch FAIL POINT C Fault Code

Q: What does the Worcester Bosch FAIL POINT C fault code mean?

Your boiler’s internal control system has suffered an electrical component failure and can no longer manage the heating process.

Also written as FAILPOINTC — same fault.

The Worcester Bosch FAIL POINT C fault code means: your boiler’s internal control system has suffered an electrical component failure and can no longer manage the heating process.. It appears on 4 Worcester Bosch models in our database.

Technical description: Green diode is damaged. Control board requires replacement.

What causes the Worcester Bosch FAIL POINT C fault?

This fault occurs when an electrical component on the boiler's internal computer, specifically a diode, burns out or degrades over time. Without this component functioning, the control board can no longer safely manage the signals required to fire the boiler, leading to a total system failure. It is typically caused by general wear and tear of the circuitry or a minor power surge that the board could no longer handle.

Typical repair cost £280-450 (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 FAIL POINT C fault code

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

Source

Worcester Bosch FAIL POINT 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 27 April 2026