How much does it cost to fix Worcester Bosch error code 9A 361?

Typical repair cost for the Worcester Bosch 9A 361 fault is £180-450 including labour.

9A 361 High

Worcester Bosch 9A 361 Fault Code

Q: What does the Worcester Bosch 9A 361 fault code mean?

Your boiler’s internal computer components are not talking to each other properly, likely due to a software mismatch or an incorrect spare part being installed.

Also written as 9A361 — same fault.

The Worcester Bosch 9A 361 fault code means: your boiler’s internal computer components are not talking to each other properly, likely due to a software mismatch or an incorrect spare part being installed.. It appears on 9 Worcester Bosch models in our database.

Technical description: The burner control unit that has been fitted is not compatible with the KIM (boiler identification module)

Typical repair cost £180-450 (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 9A 361 fault code

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

Source

Worcester Bosch 9A 361 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