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

Typical repair cost for the Worcester Bosch FAIL POINT K fault is £250-£450 including labour.

FAIL POINT K High

Worcester Bosch FAIL POINT K Fault Code

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

Your boiler's main internal computer has developed a serious communication error and cannot operate, often because it has been exposed to water or has suffered an electrical failure.

Also written as FAILPOINTK — same fault.

The Worcester Bosch FAIL POINT K fault code means: your boiler's main internal computer has developed a serious communication error and cannot operate, often because it has been exposed to water or has suffered an electrical failure.. It appears on 4 Worcester Bosch models in our database.

Technical description: Gas valve mode switch not set to 'NORM' or water temperature low/gas pressure issues.

What causes the Worcester Bosch FAIL POINT K fault?

This fault occurs when the boiler's main control board suffers a critical internal failure and can no longer process data to operate the system. The most common cause is water ingress from a leaking internal component dripping onto the electronics, or a power surge that has damaged the sensitive electrical tracks on the board.

Typical repair cost £250-£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 K fault code

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

Source

Worcester Bosch FAIL POINT K 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