What does the Worcester Bosch b6 fault code mean?

Your boiler's internal computer is experiencing a communication error, meaning it has lost track of its own settings and cannot safely operate.

How much does it cost to fix Worcester Bosch error code b6?

Typical repair cost for the Worcester Bosch b6 fault is £150-300 including labour.

Manufacturer manual

Data error

Shared across the range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like b6: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.

Break-even maths on monthly cover.